If saving a remote capture on shutdown, wait for transfer before exit

qrenderdoc/Windows/Dialogs/LiveCapture.cpp

@@ -912,6 +912,13 @@ bool LiveCapture::checkAllowClose(int totalUnsavedCaptures, bool &noToAll)
     {
       bool success = saveCapture(cap, QString());
 
+      // need to wait for the transfer to finish before exiting, when captureCopied() is called
+      // cap->local will become true. Otherwise wait until the transfer is finished or we disconnect
+      // for another reason - and offer a cancel button
+      ShowProgressDialog(
+          this, tr("Transferring file."), [this, cap]() { return !IsConnected() || cap->local; },
+          NULL, [&success]() { success = false; });
+
       if(!success)
       {
         m_IgnoreThreadClosed = false;