Update confetti.js

Author: Bwc9876

src/confetti.js

@@ -682,8 +682,10 @@
           global.removeEventListener('resize', onResize);
         }
 
-        if (isLibCanvas && canvas && document.body.contains(canvas)) {
-          document.body.removeChild(canvas);
+        if (isLibCanvas && canvas) {
+          if (document.body.contains(canvas)) {
+            document.body.removeChild(canvas); 
+          }
           canvas = null;
           initialized = false;
         }