net_uv: resume on closed net.Socket shouldn't crash

Author: ry

lib/net_uv.js

@@ -167,7 +167,9 @@ Socket.prototype.pause = function() {
 
 
 Socket.prototype.resume = function() {
-  this._handle.readStart();
+  if (this._handle) {
+    this._handle.readStart();
+  }
 };