--- channels/chan_sip.c.2011-02-23	2011-02-23 11:11:04.000000000 -0700
+++ channels/chan_sip.c	2011-02-23 11:20:56.000000000 -0700
@@ -2584,6 +2584,7 @@
 				break;
 			default:
 				ast_log(LOG_ERROR, "Unknown tcptls thread alert '%d'\n", alert);
+				goto cleanup;
 			}
 		}
 	}