Need to clear calling_party_cat variable after we retrieve it

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@115941 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_zap.c

@@ -9242,7 +9242,7 @@ static void ss7_start_call(struct zt_pvt *p, struct zt_ss7 *linkset)
 	snprintf(tmp, sizeof(tmp), "%d", p->calling_party_cat);
 	pbx_builtin_setvar_helper(c, "SS7_CALLING_PARTY_CATEGORY", tmp);
 	/* Clear this after we set it */
-	p->call_ref_pc = 0;
+	p->calling_party_cat = 0;
 
 	if (!ast_strlen_zero(p->redirecting_num)) {
 		pbx_builtin_setvar_helper(c, "SS7_REDIRECTING_NUMBER", p->redirecting_num);