Button.onInputUpHandler wouldn't set an upFrame for a frame ID of zero, made the check more strict.

Author: photonstorm

README.md

@@ -66,6 +66,8 @@ Bug Fixes
 * Fixed Tile callback check in Arcade Physics (fix #562)
 * Removed the examples build script from the Gruntfile (fix #592)
 * The P2 World wouldn't clear down fully on a State change, now properly clears out contacts, resets the bitmask, etc.
+* Button.onInputUpHandler wouldn't set an upFrame for a frame ID of zero, made the check more strict.
+
 
 Updated:
 

src/gameobjects/Button.js

@@ -557,7 +557,7 @@ Phaser.Button.prototype.onInputUpHandler = function (sprite, pointer, isOver) {
     }
     else
     {
-        if (this._onUpFrameName || this._onUpFrameID)
+        if (this._onUpFrameName !== null || this._onUpFrameID !== null)
         {
             this.setState(4);
         }