res_pjsip_pubsub: Increment persistence data ref when recreating.

Each subscription needs to have a reference to the persisted data
for it, as well as the main JSON contained within the tree. When
recreating a subscription this did not occur and they both shared
the same reference.

ASTERISK-28714

Change-Id: I706abd49ea182ea367a4ac3feca2706460ae9f4a

diff --git a/res/res_pjsip_pubsub.c b/res/res_pjsip_pubsub.c
index 32e0adf540011c053c83c37c674ea1c20a9c7de1..bfa3dc975ccaf169c5c6c75e248752838e4722c2 100644 (file)
--- a/res/res_pjsip_pubsub.c
+++ b/res/res_pjsip_pubsub.c
@@ -1264,7 +1264,7 @@ static struct ast_sip_subscription *allocate_subscription(const struct ast_sip_s
         */
 
        if (tree->persistence && tree->persistence->generator_data) {
-               sub->persistence_data = ast_json_object_get(tree->persistence->generator_data, resource);
+               sub->persistence_data = ast_json_ref(ast_json_object_get(tree->persistence->generator_data, resource));
        }
 
        sub->handler = handler;