invoke callbacks of destroyed trackers

Author: autarc

lib/client/http-tracker.js

@@ -74,7 +74,7 @@ HTTPTracker.prototype.scrape = function (opts) {
 
 HTTPTracker.prototype.destroy = function (cb) {
   var self = this
-  if (self.destroyed) return
+  if (self.destroyed) return cb && cb()
   self.destroyed = true
   clearInterval(self.interval)
 

lib/client/udp-tracker.js

@@ -47,7 +47,7 @@ UDPTracker.prototype.scrape = function (opts) {
 
 UDPTracker.prototype.destroy = function (cb) {
   var self = this
-  if (self.destroyed) return
+  if (self.destroyed) return cb && cb()
   self.destroyed = true
   clearInterval(self.interval)
 

lib/client/websocket-tracker.js

@@ -66,7 +66,7 @@ WebSocketTracker.prototype.scrape = function (opts) {
 
 WebSocketTracker.prototype.destroy = function (onclose) {
   var self = this
-  if (self.destroyed) return
+  if (self.destroyed) return onclose && onclose()
   self.destroyed = true
   clearInterval(self.interval)