Fix upgrade async with cork

src/AsyncSocket.h

@@ -141,11 +141,6 @@ struct AsyncSocket {
  getLoopData()->corkedSocket = this;
  }
 
- /* Returns the corked socket or nullptr */
- void *corkedSocket() {
- return getLoopData()->corkedSocket;
- }
-
  /* Returns wheter we are corked or not */
  bool isCorked() {
  return getLoopData()->corkedSocket == this;

src/HttpResponse.h

@@ -496,13 +496,14 @@ struct HttpResponse : public AsyncSocket<SSL> {
  /* Corks the response if possible. Leaves already corked socket be. */
  HttpResponse *cork(MoveOnlyFunction<void()> &&handler) {
  if (!Super::isCorked() && Super::canCork()) {
+ LoopData *loopData = Super::getLoopData();
  Super::cork();
  handler();
 
  /* The only way we could possibly have changed the corked socket during handler call, would be if 
  * the HTTP socket was upgraded to WebSocket and caused a realloc. Because of this we cannot use "this"
  * from here downwards. The corking is done with corkUnchecked() in upgrade. It steals cork. */
- auto *newCorkedSocket = Super::corkedSocket();
+ auto *newCorkedSocket = loopData->corkedSocket;
 
  /* If nobody is corked, it means most probably that large amounts of data has
  * been written and the cork buffer has already been sent off and uncorked.