Fix error

@soyjavi · @soyjavi · commit 7cbdad322e2d · 2014-06-12T15:55:52.000+02:00
diff --git a/source/quo.gestures.coffee b/source/quo.gestures.coffee
@@ -32,7 +32,7 @@ Quo.Gestures = do ($$ = Quo) ->
 
   # Private methods
   _start = (ev) ->
-    return ev.stopPropagation() if ev.srcElement?.tagName.toLowerCase() in _disabled_tags
+    return ev.stopPropagation() if (ev.srcElement or ev.target).tagName.toLowerCase() in _disabled_tags
     _started = true
     _originalEvent = ev or event
     _fingers = _getFingers(ev)
