If a channel does not have an owner, do not try to set a channel variable.

This will end up making the channel variable global, which is not right.

Closes issue #10720, patch by flefoll.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@82394 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_zap.c

@@ -9127,7 +9127,7 @@ static void *pri_dchannel(void *vpri)
 									pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset, pri->span, (int)e->hangup.aoc_units, (e->hangup.aoc_units == 1) ? "" : "s");
 
 #ifdef SUPPORT_USERUSER
-						if (!ast_strlen_zero(e->hangup.useruserinfo)) {
+						if (pri->pvts[chanpos]->owner && !ast_strlen_zero(e->hangup.useruserinfo)) {
 							pbx_builtin_setvar_helper(pri->pvts[chanpos]->owner, "USERUSERINFO", e->hangup.useruserinfo);
 						}
 #endif