Ios: Finish deploy on failure

Previously the deploy step would seemingly run forever if the
startSimulator step failed, as no result was added to the promise.

Change-Id: Ib320d051e78057e536d4ad371cb30108e848c65f
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/ios/iostoolhandler.cpp

@@ -746,6 +746,8 @@ void IosSimulatorToolHandlerPrivate::requestTransferApp(const FilePath &appBundl
             installAppOnSimulator();
         } else {
             errorMsg(Tr::tr("Application install on simulator failed. Simulator not running."));
+            if (!response.commandOutput.isEmpty())
+                errorMsg(response.commandOutput);
             didTransferApp(m_bundlePath, m_deviceId, IosToolHandler::Failure);
             emit q->finished(q);
         }