Fixes: debugger: start symbol is WinMainCRTStartup, not _start

sometimes...

src/plugins/debugger/gdbengine.h

@@ -328,6 +328,8 @@ private:
     QString m_currentFrame;
     QMap<QString, QString> m_varToType;
 
+    bool m_waitingForBreakpointSynchronizationToContinue;
+
     DebuggerManager *q;
     IDebuggerManagerAccessForEngines *qq;
 };