Minor updates. Not a stable version for USRP.

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4442 818b1a75-f10b-46b9-bf7c-635c3b92a50f

targets/RTAI/USER/lte-softmodem-usrp.c

@@ -300,7 +300,8 @@ void *tx_error_handler(void *ptr)
 	while (!oai_exit)
 	{
 		tx_errorcode_handler();
-	}
+	}
+	printf("[USRP monitoring thread] Received oai_exit signal. Ends.\n");
 	pthread_exit(NULL);
 }