app_stack: Add missing unlock in off-nominal path of STACK_PEEK function.

ASTERISK-23620 #close
Reported by: Bradley Watkins
Patches:
      ASTERISK-23620_unlock_oldlist.patch (license #5021) patch uploaded by Bradley Watkins
........

Merged revisions 412225 from http://svn.asterisk.org/svn/asterisk/branches/1.8

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@412226 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/apps/app_stack.c b/apps/app_stack.c
index dcd35d235b1b3191e7f091a3e0871b7bc871eeef..b0696232894d82f94366739373d48ab466685b56 100644 (file)
--- a/apps/app_stack.c
+++ b/apps/app_stack.c
@@ -852,6 +852,7 @@ static int stackpeek_read(struct ast_channel *chan, const char *cmd, char *data,
                if (!ast_true(args.suppress)) {
                        ast_log(LOG_ERROR, "Stack peek of '%s' is more stack frames than I have\n", args.n);
                }
+               AST_LIST_UNLOCK(oldlist);
                ast_channel_unlock(chan);
                return -1;
        }