remove window resize listener when destroying the editor

lib/ace/ace.js

@@ -94,6 +94,9 @@ exports.edit = function(el) {
         onResize: editor.resize.bind(editor)
     };
     event.addListener(window, "resize", env.onResize);
+    editor.on("destroy", function() {
+        event.removeListener(window, "resize", env.onResize);
+    });
     el.env = editor.env = env;
     return editor;
 };

lib/ace/editor.js

@@ -2169,6 +2169,7 @@ var Editor = function(renderer, session) {
      **/
     this.destroy = function() {
         this.renderer.destroy();
+        this._emit("destroy", this);
     };
 
 }).call(Editor.prototype);