Not use __FAILURE__ macro (#3)

main.c

@@ -148,7 +148,7 @@ static int SetupCallbacksForModule(IOTHUB_MODULE_CLIENT_LL_HANDLE iotHubModuleCl
     if (IoTHubModuleClient_LL_SetInputMessageCallback(iotHubModuleClientHandle, "input1", InputQueue1Callback, (void*)iotHubModuleClientHandle) != IOTHUB_CLIENT_OK)
     {
         printf("ERROR: IoTHubModuleClient_LL_SetInputMessageCallback(\"input1\")..........FAILED!\r\n");
-        ret = __FAILURE__;
+        ret = 1;
     }
     else
     {