Improve large backpressure drain performance

src/WebSocketData.h

@@ -50,7 +50,7 @@ private:
     /* We could be a subscriber */
     Subscriber *subscriber = nullptr;
 public:
-    WebSocketData(bool perMessageDeflate, CompressOptions compressOptions, std::string &&backpressure) : AsyncSocketData<false>(std::move(backpressure)), WebSocketState<true>() {
+    WebSocketData(bool perMessageDeflate, CompressOptions compressOptions, BackPressure &&backpressure) : AsyncSocketData<false>(std::move(backpressure)), WebSocketState<true>() {
         compressionStatus = perMessageDeflate ? ENABLED : DISABLED;
 
         /* Initialize the dedicated sliding window */