Fix possible crash when quitting while connecting (VNC).

svn path=/trunk/KDE/kdenetwork/krdc/; revision=1151206

vnc/vncclientthread.cpp

@@ -192,6 +192,7 @@ VncClientThread::VncClientThread(QObject *parent)
         : QThread(parent)
         , frameBuffer(0)
         , m_stopped(false)
+        , cl(0)
 {
     QMutexLocker locker(&mutex);
 
@@ -210,8 +211,10 @@ VncClientThread::~VncClientThread()
         kDebug(5011) << "Attempting to stop in deconstructor, will crash if this fails:" << quitSuccess;
     }
 
-    // Disconnect from vnc server & cleanup allocated resources
-    rfbClientCleanup(cl);
+    if (cl) {
+        // Disconnect from vnc server & cleanup allocated resources
+        rfbClientCleanup(cl);
+    }
 
     delete [] frameBuffer;
 }

vnc/vncview.cpp

@@ -155,6 +155,8 @@ void VncView::startQuitting()
 {
     kDebug(5011) << "about to quit";
 
+    setStatus(Disconnecting);
+
     unpressModifiers();
 
     // Disconnect all signals so that we don't get any more callbacks from the client thread
@@ -167,8 +169,6 @@ void VncView::startQuitting()
 
     const bool connected = status() == RemoteView::Connected;
 
-    setStatus(Disconnecting);
-
     m_quitFlag = true;
 
     if (connected) {