add: if (!tinyMCE.isInstance(inst)) continue; 
context: function TinyMCE_autosave_beforeUnloadHandler() {	var msg = tinyMCE.getLang("lang_autosave_unload_msg");	var anyDirty = false;	for (var n in tinyMCE.instances) {		var inst = tinyMCE.instances[n];		if (inst.isDirty())			return msg;	}	return;}
meta: 4999	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4999/344b1dcee015ec3eb8ceb999d8fdd03d8d9eaeec/editor_plugin_src.js/buggy/wp-includes/js/tinymce/plugins/autosave/editor_plugin_src.js