Ensure that it is possible to close the greeter plugin

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1255017 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

kdm/kfrontend/kgreeter.cpp

@@ -221,6 +221,11 @@ KGreeter::~KGreeter()
 	delete stsFile;
 }
 
+void KGreeter::done(int r) {
+	closingDown = true;
+	inherited::done(r);
+}
+
 void KGreeter::handleInputPipe(void) {
 	if (closingDown) {
 		::unlink(mPipeFilename.ascii());

kdm/kfrontend/kgreeter.h

@@ -68,6 +68,7 @@ class KGreeter : public KGDialog, public KGVerifyHandler {
   public slots:
 	void accept();
 	void reject();
+	void done(int r);
 	void slotUserClicked( TQListViewItem * );
 	void slotSessionSelected( int );
 	void slotUserEntered();