core: Ensure presencestate subtype and message are NULL.

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

diff --git a/main/presencestate.c b/main/presencestate.c
index 207e2aacb888da6384286f66edb5f570efcef095..56c903cf288e675867376b324a6702a51e257850 100644 (file)
--- a/main/presencestate.c
+++ b/main/presencestate.c
@@ -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) {