Clean up.

examples/js/controls/TrackballControls.js

@@ -579,7 +579,7 @@ THREE.TrackballControls = function ( object, domElement ) {
 		window.removeEventListener( 'keydown', keydown, false );
 		window.removeEventListener( 'keyup', keyup, false );
 
-	}
+	};
 
 	this.domElement.addEventListener( 'contextmenu', contextmenu, false );
 	this.domElement.addEventListener( 'mousedown', mousedown, false );