Fix loading bar only partially clearing previous draw

Depending on the canvas size, the loader would sometimes clear the entire bar, sometimes only part of it, and sometimes none of it. As a side note, clearing may not even be necessary in the first place, because the entire bar gets redrawn over the previous one anyway.

Author: Joncom

lib/impact/loader.js

@@ -70,7 +70,7 @@ ig.Loader = ig.Class.extend({
 		var y = ig.system.height * 0.5-h/2;
 
 		ig.system.context.fillStyle = '#000';
-		ig.system.context.fillRect( 0, 0, 480, 320 );
+		ig.system.context.fillRect( 0, 0, ig.system.width, ig.system.height );
 
 		ig.system.context.fillStyle = '#fff';
 		ig.system.context.fillRect( x*s, y*s, w*s, h*s );
@@ -98,4 +98,4 @@ ig.Loader = ig.Class.extend({
 	}
 });
 
-});
+});