Fix scope for overriden autocomplete.getModel() function.

Author: f1ames

plugin.js

@@ -31,7 +31,8 @@ CKEDITOR.plugins.add('scayt', {
 
 			CKEDITOR.plugins.autocomplete.prototype.getModel = function(arg1) {
 				var editor = this.editor,
-					model = originalFn(arg1);
+					geModelFn = originalFn.bind(this),
+					model = geModelFn(arg1);
 
 				model.on('change-isActive', function(evt) {
 					evt.data ? editor.fire('autocompletePanelShow') : editor.fire('autocompletePanelHide');
@@ -2057,4 +2058,4 @@ CKEDITOR.on('scaytReady', function() {
  *
  * @cfg {String} [scayt_elementsToIgnore='style']
  * @member CKEDITOR.config
- */
+ */