Adding missing case for sprite OnpointerOut

dist/preview release/babylon.max.js

@@ -12543,6 +12543,7 @@ var BABYLON;
                         _this.setPointerOverSprite(pickResult.pickedSprite);
                     }
                     else {
+                        _this.setPointerOverSprite(null);
                         // Restore pointer
                         canvas.style.cursor = "";
                     }

src/babylon.scene.js

@@ -347,6 +347,7 @@ var BABYLON;
                         _this.setPointerOverSprite(pickResult.pickedSprite);
                     }
                     else {
+                        _this.setPointerOverSprite(null);
                         // Restore pointer
                         canvas.style.cursor = "";
                     }

src/babylon.scene.ts

@@ -496,6 +496,7 @@
                         canvas.style.cursor = "pointer";
                         this.setPointerOverSprite(pickResult.pickedSprite);
                     } else {
+                        this.setPointerOverSprite(null);
                         // Restore pointer
                         canvas.style.cursor = "";
                     }