Use the correct list macros for deleting an item from the middle of a list.

(issue #13777)
 Reported by: pj
 Patches: 
       20090203__bug13777.diff.txt uploaded by Corydon76 (license 14)
 Tested by: pj


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@176320 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_skinny.c

@@ -5869,9 +5869,9 @@ static void destroy_session(struct skinnysession *s)
 {
 	struct skinnysession *cur;
 	AST_LIST_LOCK(&sessions);
-	AST_LIST_TRAVERSE(&sessions, cur, list) {
+	AST_LIST_TRAVERSE_SAFE_BEGIN(&sessions, cur, list) {
 		if (cur == s) {
-			AST_LIST_REMOVE(&sessions, s, list);
+			AST_LIST_REMOVE_CURRENT(list);
 			if (s->fd > -1) 
 				close(s->fd);
 			
@@ -5882,6 +5882,7 @@ static void destroy_session(struct skinnysession *s)
 			ast_log(LOG_WARNING, "Trying to delete nonexistent session %p?\n", s);
 		}
 	}
+	AST_LIST_TRAVERSE_SAFE_END
 	AST_LIST_UNLOCK(&sessions);
 }