Fix closing during saving session

(cherry picked from commit 56137a1306)

kaffeine/src/kaffeine.cpp

@@ -1523,8 +1523,10 @@ void Kaffeine::slotQuit()
 		m_systemTray = NULL;
 	}*/
 
+	if ( !kapp->sessionSaving() ) {
 	    KApplication::exit(0);
 	}
+}
 
 void Kaffeine::closeEvent(TQCloseEvent* e)
 {