Fixed issue with an extra 4px being added to the canvas elements because the display type wasn't set.

Author: photonstorm

src/system/Canvas.js

@@ -38,15 +38,15 @@ Phaser.Canvas = {
             var canvas = document.createElement('canvas');
         }
 
-        canvas.width = width;
-        canvas.height = height;
-
         if (typeof id === 'string' && id !== '')
         {
             canvas.id = id;
-            canvas.style.display = 'block';
         }
 
+        canvas.width = width;
+        canvas.height = height;
+        canvas.style.display = 'block';
+
         return canvas;
 
     },