http: improve buffer creation

Author: ShogunPanda

src/node_http_parser.cc

@@ -459,13 +459,11 @@ class Parser : public AsyncWrap, public StreamListener {
       return 0;
 
     // Make sure Buffer will be in parent HandleScope
-    Local<Object> current_buffer_ = scope.Escape(Buffer::Copy(
-        env()->isolate(),
-        current_buffer_data_,
-        current_buffer_len_).ToLocalChecked());
+    Local<Object> current_buffer = scope.Escape(
+        Buffer::Copy(env()->isolate(), at, length).ToLocalChecked());
 
     Local<Value> argv[3] = {
-        current_buffer_,
+        current_buffer,
         Integer::NewFromUnsigned(
             env()->isolate(), static_cast<uint32_t>(at - current_buffer_data_)),
         Integer::NewFromUnsigned(env()->isolate(), length)};