--- asterisk/channels/chan_sip.c	2004-02-07 14:30:31.000000000 +0100
+++ myasterisk/channels/chan_sip.c	2004-02-07 17:52:28.372882776 +0100
@@ -761,6 +761,8 @@
 				if ((nowtime - regseconds) > default_expiry) 
 					memset(&p->addr, 0, sizeof(p->addr));
 			}
+			mysql_free_result(result);
+			result = NULL;
 		}
 		ast_mutex_unlock(&mysqllock);
 	}