lib-sieve: store action: Avoid NULL pointer dereference during rollba…

…ck when transaction context is somehow unassigned. This change matches the other transaction stages. This will not currently happen though. Reported by Coverity.
dovecot · Dec 3, 2017 · c6f7267 · c6f7267
1 parent 876bce6
commit c6f7267
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/lib-sieve/sieve-actions.c b/src/lib-sieve/sieve-actions.c
@@ -729,6 +729,8 @@ static void act_store_rollback
 	struct act_store_transaction *trans =
 		(struct act_store_transaction *) tr_context;
 
+	if ( trans == NULL ) return;
+
 	i_assert( trans->box != NULL );
 
 	if (!success) {