[newlib-cygwin] Cygwin: AF_UNIX: listen_pipe: check for STATUS_SUCCESS

[Ken Brown]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=6748c6ecf86947964a358f53e3a6c0b63849cf33

commit 6748c6ecf86947964a358f53e3a6c0b63849cf33
Author: Ken Brown <kbrown@cornell.edu>
Date:   Sat Oct 3 12:37:36 2020 -0400

    Cygwin: AF_UNIX: listen_pipe: check for STATUS_SUCCESS
    
    A successful connection can be indicated by STATUS_SUCCESS or
    STATUS_PIPE_CONNECTED.  Previously we were checking only for the
    latter.

Diff:
---
 winsup/cygwin/fhandler_socket_unix.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/fhandler_socket_unix.cc b/winsup/cygwin/fhandler_socket_unix.cc
index 0ae7fe125..1a9532fe5 100644
--- a/winsup/cygwin/fhandler_socket_unix.cc
+++ b/winsup/cygwin/fhandler_socket_unix.cc
@@ -1064,6 +1064,7 @@ fhandler_socket_unix::listen_pipe ()
   IO_STATUS_BLOCK io;
   HANDLE evt = NULL;
   DWORD waitret = WAIT_OBJECT_0;
+  int ret = -1;
 
   io.Status = STATUS_PENDING;
   if (!is_nonblocking () && !(evt = create_event ()))
@@ -1085,9 +1086,11 @@ fhandler_socket_unix::listen_pipe ()
     set_errno (EINTR);
   else if (status == STATUS_PIPE_LISTENING)
     set_errno (EAGAIN);
-  else if (status != STATUS_PIPE_CONNECTED)
+  else if (status == STATUS_SUCCESS || status == STATUS_PIPE_CONNECTED)
+    ret = 0;
+  else
     __seterrno_from_nt_status (status);
-  return (status == STATUS_PIPE_CONNECTED) ? 0 : -1;
+  return ret;
 }
 
 ULONG