Make helper call a little safer (suggested by Russell on IRC)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@150635 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index a477c97..8ad6b5d 100644 (file)
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -2312,8 +2312,9 @@ static void iax2_destroy(int callno)
        struct ast_channel *owner = NULL;
 
 retry:
-       pvt = iaxs[callno];
-       iax2_destroy_helper(pvt);
+       if ((pvt = iaxs[callno])) {
+               iax2_destroy_helper(pvt);
+       }
 
        lastused[callno] = ast_tvnow();