Fix intermittent crash on extension finalize (#23)

* Fix macOS coordinate system

* Add create()/destroy() to example

* Fix intermittent crash on extension finalize

Author: dapetcu21

main/main.gui

@@ -8,7 +8,7 @@ background_color {
 nodes {
   position {
     x: 320.0
-    y: 125.0
+    y: 195.0
     z: 0.0
     w: 1.0
   }
@@ -169,7 +169,7 @@ nodes {
 nodes {
   position {
     x: 215.0
-    y: 55.0
+    y: 125.0
     z: 0.0
     w: 1.0
   }
@@ -330,7 +330,7 @@ nodes {
 nodes {
   position {
     x: 425.0
-    y: 55.0
+    y: 125.0
     z: 0.0
     w: 1.0
   }
@@ -491,7 +491,7 @@ nodes {
 nodes {
   position {
     x: 320.0
-    y: 265.0
+    y: 335.0
     z: 0.0
     w: 1.0
   }
@@ -652,7 +652,7 @@ nodes {
 nodes {
   position {
     x: 320.0
-    y: 195.0
+    y: 265.0
     z: 0.0
     w: 1.0
   }
@@ -810,6 +810,328 @@ nodes {
   text_leading: 1.0
   text_tracking: 0.0
 }
+nodes {
+  position {
+    x: 215.0
+    y: 55.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 0.5
+    y: 0.5
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 200.0
+    y: 100.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_TEMPLATE
+  id: "button_create"
+  layer: ""
+  inherit_alpha: true
+  alpha: 1.0
+  template: "/dirtylarry/button.gui"
+  template_node_child: false
+}
+nodes {
+  position {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 380.0
+    y: 120.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_BOX
+  blend_mode: BLEND_MODE_ALPHA
+  texture: "button/button_normal"
+  id: "button_create/larrybutton"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_CENTER
+  adjust_mode: ADJUST_MODE_FIT
+  parent: "button_create"
+  layer: ""
+  inherit_alpha: true
+  slice9 {
+    x: 32.0
+    y: 32.0
+    z: 32.0
+    w: 32.0
+  }
+  clipping_mode: CLIPPING_MODE_NONE
+  clipping_visible: true
+  clipping_inverted: false
+  alpha: 1.0
+  overridden_fields: 4
+  template_node_child: true
+  size_mode: SIZE_MODE_MANUAL
+}
+nodes {
+  position {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.5
+    y: 1.5
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 200.0
+    y: 100.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_TEXT
+  blend_mode: BLEND_MODE_ALPHA
+  text: "Create"
+  font: "larryfont"
+  id: "button_create/larrylabel"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_CENTER
+  outline {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  shadow {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  adjust_mode: ADJUST_MODE_FIT
+  line_break: false
+  parent: "button_create/larrybutton"
+  layer: ""
+  inherit_alpha: true
+  alpha: 1.0
+  outline_alpha: 0.0
+  shadow_alpha: 1.0
+  overridden_fields: 3
+  overridden_fields: 8
+  overridden_fields: 31
+  template_node_child: true
+  text_leading: 1.0
+  text_tracking: 0.0
+}
+nodes {
+  position {
+    x: 425.0
+    y: 55.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 0.5
+    y: 0.5
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 200.0
+    y: 100.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_TEMPLATE
+  id: "button_destroy"
+  layer: ""
+  inherit_alpha: true
+  alpha: 1.0
+  template: "/dirtylarry/button.gui"
+  template_node_child: false
+}
+nodes {
+  position {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 380.0
+    y: 120.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_BOX
+  blend_mode: BLEND_MODE_ALPHA
+  texture: "button/button_normal"
+  id: "button_destroy/larrybutton"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_CENTER
+  adjust_mode: ADJUST_MODE_FIT
+  parent: "button_destroy"
+  layer: ""
+  inherit_alpha: true
+  slice9 {
+    x: 32.0
+    y: 32.0
+    z: 32.0
+    w: 32.0
+  }
+  clipping_mode: CLIPPING_MODE_NONE
+  clipping_visible: true
+  clipping_inverted: false
+  alpha: 1.0
+  overridden_fields: 4
+  template_node_child: true
+  size_mode: SIZE_MODE_MANUAL
+}
+nodes {
+  position {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.5
+    y: 1.5
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 200.0
+    y: 100.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_TEXT
+  blend_mode: BLEND_MODE_ALPHA
+  text: "Destroy"
+  font: "larryfont"
+  id: "button_destroy/larrylabel"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_CENTER
+  outline {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  shadow {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  adjust_mode: ADJUST_MODE_FIT
+  line_break: false
+  parent: "button_destroy/larrybutton"
+  layer: ""
+  inherit_alpha: true
+  alpha: 1.0
+  outline_alpha: 0.0
+  shadow_alpha: 1.0
+  overridden_fields: 3
+  overridden_fields: 8
+  overridden_fields: 31
+  template_node_child: true
+  text_leading: 1.0
+  text_tracking: 0.0
+}
 material: "/builtins/materials/gui.material"
 adjust_reference: ADJUST_REFERENCE_PARENT
 max_nodes: 512