Send call release with unallocated cause instead of normal call clearing, when

invalid extension is called.
(closes issue #13408)
 Reported by: adomjan
 Patches: 
       chan_dahdi.c-ss7-unallocated-2 uploaded by adomjan (license 487)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@155324 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_dahdi.c

@@ -9905,7 +9905,8 @@ static void *ss7_linkset(void *data)
 						ss7_start_call(p, linkset);
 				} else {
 					ast_debug(1, "Call on CIC for unconfigured extension %s\n", p->exten);
-					isup_rel(ss7, e->iam.call, -1);
+					p->alreadyhungup = 1;
+					isup_rel(ss7, e->iam.call, AST_CAUSE_UNALLOCATED);
 				}
 				ast_mutex_unlock(&p->lock);
 				break;