Fix socket.end() problem on non-empty queue

lib/net.js

@@ -73,7 +73,9 @@ IOWatcher.prototype.ondrain = function () {
 
 IOWatcher.prototype.onerror = function (errno) {
   assert(this.socket);
-  this.socket.destroy(errnoException(errno, 'write'));
+  var e = errnoException(errno, 'write');
+  e.message += " fd=" + this.socket.fd;
+  this.socket.destroy(e);
 };
 
 
@@ -613,7 +615,7 @@ Stream.prototype.end = function (data, encoding) {
   this._eof = true;
 
   // If this isn't in the dumpQueue then we shutdown now.
-  if (!this._writeWatcher.next) this._shutdown();
+  if (!this._writeWatcher.firstBucket) this._shutdown();
 };