fix: NPE, fixes #151

Author: Fix3dll

src/main/java/com/fix3dll/skyblockaddons/features/outline/EntityOutlineRenderer.java

@@ -84,6 +84,10 @@ public static boolean isRenderEntityOutlinesConditionsMet() {
      * @return {@code true} if outlines should be rendered
      */
     public static boolean shouldRenderEntityOutlines(Entity entity) {
+        if (entity == null) {
+            return false;
+        }
+
         if (!isRenderEntityOutlinesConditionsMet()) {
             return false;
         }