Connection: defer fetch 'end' event until next tick

Due to streams2' use of process.nextTick, without this patch body streams' 'end' events will emit after the fetch 'end' event, causing some confusion.

lib/Connection.js

@@ -1088,9 +1088,12 @@ Connection.prototype._resTagged = function(info) {
   }
 
   if (req.bodyEmitter) {
+    var bodyEmitter = req.bodyEmitter;
     if (err)
-      req.bodyEmitter.emit('error', err);
-    req.bodyEmitter.emit('end');
+      bodyEmitter.emit('error', err);
+    process.nextTick(function() {
+      bodyEmitter.emit('end');
+    });
   } else {
     req.cbargs.unshift(err);
     req.cb && req.cb.apply(this, req.cbargs);