[Asterisk-code-review] res stasis: Don't unsubscribe from a NULL bridge. (asterisk[13])

[Joshua Colp]

Joshua Colp has uploaded a new change for review. ( https://gerrit.asterisk.org/4334 )

Change subject: res_stasis: Don't unsubscribe from a NULL bridge.
......................................................................

res_stasis: Don't unsubscribe from a NULL bridge.

A NULL bridge has special meaning in res_stasis for
unsubscribing. It means that a subscription to ALL
bridges should be removed. This should not be done
as part of the normal subscription management in
the res_stasis channel loop.

ASTERISK-26468

Change-Id: I6d5bea8246dd13a22ef86b736aefbf2a39c15af0
---
M res/res_stasis.c
1 file changed, 6 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/34/4334/1

diff --git a/res/res_stasis.c b/res/res_stasis.c
index 1183f67..19257e9 100644
--- a/res/res_stasis.c
+++ b/res/res_stasis.c
@@ -1315,7 +1315,9 @@
 		bridge = ao2_bump(stasis_app_get_bridge(control));
 
 		if (bridge != last_bridge) {
-			app_unsubscribe_bridge(app, last_bridge);
+			if (last_bridge) {
+				app_unsubscribe_bridge(app, last_bridge);
+			}
 			if (bridge) {
 				app_subscribe_bridge(app, bridge);
 			}
@@ -1376,7 +1378,9 @@
 		ast_bridge_depart(chan);
 	}
 
-	app_unsubscribe_bridge(app, stasis_app_get_bridge(control));
+	if (stasis_app_get_bridge(control)) {
+		app_unsubscribe_bridge(app, stasis_app_get_bridge(control));
+	}
 	ao2_cleanup(bridge);
 
 	/* Only publish a stasis_end event if it hasn't already been published */

-- 
To view, visit https://gerrit.asterisk.org/4334
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I6d5bea8246dd13a22ef86b736aefbf2a39c15af0
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: Joshua Colp <jcolp at digium.com>