rem: RemoveDirectoryServerObserver(null); 
add: RemoveDirectoryServerObserver(null); if (gCurrentIdentity) 
context: function ComposeUnload(){  dump("\nComposeUnload from XUL\n");  RemoveMessageComposeOfflineObserver();    RemoveDirectoryServerObserver(null);    RemoveDirectoryServerObserver("mail.identity." + gCurrentIdentity.key);    if (gCurrentAutocompleteDirectory)       RemoveDirectorySettingsObserver(gCurrentAutocompleteDirectory);  gMsgCompose.UnregisterStateListener(stateListener);}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/534ed8ad12ff974ced477897c43be3458772e441/MsgComposeCommands.js/clean/mailnews/compose/resources/content/MsgComposeCommands.js