update to drachtio-srf@4.4.34

lib/tasks/say.js

@@ -21,7 +21,7 @@ class TaskSay extends Task {
     this.ep = ep;
     try {
       const filepath = [];
-      while (!this.killed && this.loop--) {
+      while (!this.killed && this.loop-- && this.ep.connected) {
         let segment = 0;
         do {
           if (filepath.length <= segment) {