ios: fix warning for failed run on device

avoid executing a runloop in a signal handler

Change-Id: I4822226d3ece93fbfb6b6107add3c1e32b6c973c
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/ios/iosrunner.h

@@ -70,6 +70,7 @@ signals:
     void errorMsg(const QString &msg);
     void finished(bool cleanExit);
 private slots:
+    void warnAboutRunFail();
     void handleDidStartApp(Ios::IosToolHandler *handler, const QString &bundlePath,
                            const QString &deviceId, Ios::IosToolHandler::OpStatus status);
     void handleGotGdbserverSocket(Ios::IosToolHandler *handler, const QString &bundlePath,
@@ -87,6 +88,7 @@ private:
     ProjectExplorer::IDevice::ConstPtr m_device;
     bool m_debuggingMode;
     bool m_cleanExit;
+    bool m_didWarn;
 };
 
 } // namespace Internal