Fix the compactheaders option in sip.conf

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@168728 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -8055,11 +8055,12 @@ static int add_header(struct sip_request *req, const char *var, const char *valu
 		return -1;
 	}
 
+	if (sip_cfg.compactheaders) {
+		var = find_alias(var, var);
+
 	ast_str_append(&req->data, 0, "%s: %s\r\n", var, value);
 	req->header[req->headers] = req->data->str + req->len;
 
-	if (sip_cfg.compactheaders)
-		var = find_alias(var, var);
 	req->len += strlen(req->header[req->headers]);
 	req->headers++;