Revert body parsing optimization

Author: viralpraxis

src/hackney_response.erl

@@ -166,8 +166,8 @@ stream_body1(Error, _Client) ->
 
 -spec stream_body_recv(binary(), #client{})
     -> {ok, binary(), #client{}} | {error, term()}.
-stream_body_recv(Buffer, Client=#client{parser=#hparser{body_state={stream, _, TransferState, _}}}) ->
-  case recv(Client, TransferState) of
+stream_body_recv(Buffer, Client=#client{parser=#hparser{body_state={stream, _, _, _}}}) ->
+  case recv(Client) of
     {ok, Data} ->
       stream_body(Data, Client);
     {error, Reason} ->
@@ -363,13 +363,6 @@ maybe_close(#client{version={Min,Maj}, headers=Headers, clen=CLen}) ->
 recv(#client{transport=Transport, socket=Skt, recv_timeout=Timeout}) ->
   Transport:recv(Skt, 0, Timeout).
 
-recv(#client{transport=Transport, socket=Skt, recv_timeout=Timeout}, {_BufSize, undefined}) ->
-  Transport:recv(Skt, 0, Timeout);
-recv(#client{transport=Transport, socket=Skt, recv_timeout=Timeout}, {BufSize, ExpectedSize}) when ExpectedSize >= BufSize ->
-  Transport:recv(Skt, ExpectedSize - BufSize, Timeout);
-recv(#client{transport=Transport, socket=Skt, recv_timeout=Timeout}, {_BufSize, _ExpectedSize}) ->
-  Transport:recv(Skt, 0, Timeout).
-
 close(#client{socket=nil}=Client) ->
   Client#client{state = closed};
 close(#client{transport=Transport, socket=Skt}=Client) ->