Fixed pixel perfect dragging, this was still using the old property 'pixelPerfect' instead of the new 'pixelPerfectClick'

Author: jeroenverfallie

src/input/InputHandler.js

@@ -1133,7 +1133,7 @@ Phaser.InputHandler.prototype = {
         this.dragOffset = new Phaser.Point();
         this.dragFromCenter = lockCenter;
 
-        this.pixelPerfect = pixelPerfect;
+        this.pixelPerfectClick = pixelPerfect;
         this.pixelPerfectAlpha = alphaThreshold;
 
         if (boundsRect)