sht_rm_name_req requires string arg (#99)

kamailio/websockets-role.cfg

@@ -119,7 +119,7 @@ event_route[websocket:closed] {
     $var(shtdec) = $shtdec(websockets=>$si::count);
     if ($sht(websockets=>$si::count) < 1) {
         xlog("L_INFO", "websocket|log|$si:$sp closed last websocket to that IP\n");
-        sht_rm_name_re(websockets=>$(si{re.subst,/\\./\\\\./g})::.*);
+        sht_rm_name_re("websockets=>$(si{re.subst,/\\./\\\\./g})::.*");
     } else {
         xlog("L_INFO", "websocket|log|closed websocket from $si:$sp, $var(count) remaining from that IP\n");
     }