Bug 1429365 - Prevent this.sink is undefined exception for resources loaded from bytecode cache. r=rickychien

MozReview-Commit-ID: C9VFVoK0pPG

--HG--
extra : rebase_source : 94809550ccb0a8efe06d4c29407bc32a8aea0e85

devtools/shared/webconsole/network-monitor.js

@@ -523,6 +523,11 @@ NetworkResponseListener.prototype = {
    * https://developer.mozilla.org/En/NsIRequestObserver
    */
   onStopRequest: function () {
+    // Bug 1429365: onStopRequest may be called after onComplete for resources loaded
+    // from bytecode cache.
+    if (!this.httpActivity) {
+      return;
+    }
     this._findOpenResponse();
     this.sink.outputStream.close();
   },