Quick fix for OpenSSL 1.1.0 on Windows

Summary:
This was treating a socket as a file descriptor, so make it explicitly be a file descriptor instead.
The full fix for this requires a *lot* of refactoring and splitting of a lot of concepts within Folly, so this short-term fix should be good enough for now.

Reviewed By: boguscoder

Differential Revision: D14266198

fbshipit-source-id: bafb3a403ab8555f865f4541323c5d0ad81f5052

folly/io/async/AsyncSSLSocket.cpp

@@ -1015,7 +1015,8 @@ bool AsyncSSLSocket::willBlock(
         return false;
       }
 
-      auto asyncPipeReader = AsyncPipeReader::newReader(eventBase_, ofd);
+      auto asyncPipeReader =
+          AsyncPipeReader::newReader(eventBase_, NetworkSocket(ofd).toFd());
       auto asyncPipeReaderPtr = asyncPipeReader.get();
       if (!asyncOperationFinishCallback_) {
         asyncOperationFinishCallback_.reset(