mod_callcenter: Fix potential segfault on loopback agent. Thanks to François Delawarde

src/mod/applications/mod_callcenter/mod_callcenter.c

@@ -1461,8 +1461,8 @@ static void *SWITCH_THREAD_FUNC outbound_agent_thread_run(switch_thread_t *threa
 				/* Switch the agent session */
 				if (real_uuid) {
 					switch_core_session_rwunlock(agent_session);
-					agent_uuid = real_uuid;
 					agent_session = switch_core_session_locate(agent_uuid);
+					agent_uuid = switch_core_session_get_uuid(agent_session);
 					agent_channel = switch_core_session_get_channel(agent_session);
 
 					switch_channel_set_variable(agent_channel, "cc_queue", h->queue_name);