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core: Ensure presencestate subtype and message are NULL.

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When retrieving presence state information there is no
guarantee that the subtype and message passed in are
set to NULL. This change ensures they are.

ASTERISK-26397 #close

Change-Id: I61f8187972d5d8bbd7d6b7f4daa4f4f7e8237b23
This commit is contained in:
Joshua Colp
2016-09-21 20:03:37 +00:00
parent 5cb3fc5d67
commit 323aff3a09
1 changed files with 3 additions and 0 deletions
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3
main/presencestate.c
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@@ -151,6 +151,9 @@ static enum ast_presence_state ast_presence_state_helper(const char *presence_pr
char *label = ast_strdupa(presence_provider);
int res = AST_PRESENCE_INVALID;
*subtype = NULL;
*message = NULL;
if (check_cache) {
res = presence_state_cached(presence_provider, subtype, message);
if (res != AST_PRESENCE_INVALID) {