Changed error message from CRIT to ERROR, because message is not CRITICAL

src/switch_core_session.c

@@ -1419,9 +1419,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_thread_launch(switch_core_se
 	switch_mutex_lock(session->mutex);
 
 	if (switch_test_flag(session, SSF_THREAD_RUNNING)) {
-		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Cannot double-launch thread!\n");
+		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Cannot double-launch thread!\n");
 	} else if (switch_test_flag(session, SSF_THREAD_STARTED)) {
-		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Cannot launch thread again after it has already been run!\n");
+		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Cannot launch thread again after it has already been run!\n");
 	} else {
 		switch_set_flag(session, SSF_THREAD_RUNNING);
 		switch_set_flag(session, SSF_THREAD_STARTED);