core: Fix a memory leak in app.c from an early return

ast_app_group_match_get_count allocates memory with the regcomp
function and we previously forgot to free it when bailing out
due to a regex compilation failure against category.

(closes issue AST-1018)
Reported by: Guenther Kelleter
Patches:
	regcomp_memleak.diff uploaded by Guenther Kelleter (license 6372)
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Merged revisions 375299 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 375300 from http://svn.asterisk.org/svn/asterisk/branches/10

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@375301 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/app.c b/main/app.c
index c8cb29c903e2b3ead734c02d1b7df6c21eb25d47..29333b2b990f647f1f08e9fd3829618fb05c29dc 100644 (file)
--- a/main/app.c
+++ b/main/app.c
@@ -1562,6 +1562,7 @@ int ast_app_group_match_get_count(const char *groupmatch, const char *category)
 
        if (!ast_strlen_zero(category) && regcomp(&regexbuf_category, category, REG_EXTENDED | REG_NOSUB)) {
                ast_log(LOG_ERROR, "Regex compile failed on: %s\n", category);
+               regfree(&regexbuf_group);
                return 0;
        }