[newlib-cygwin] Cygwin: avoid GCC 10 error with -Werror=parentheses

[newlib-cygwin] Cygwin: avoid GCC 10 error with -Werror=parentheses

[Jon TURNEY]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=3bb579a43c09d18217a19035054817591eb8d870

commit 3bb579a43c09d18217a19035054817591eb8d870
Author: Jon Turney <jon.turney@dronecode.org.uk>
Date:   Sat Sep 19 15:51:10 2020 +0100

    Cygwin: avoid GCC 10 error with -Werror=parentheses
    
    ../../../../src/winsup/cygwin/fhandler_socket_inet.cc: In member function 'ssize_t fhandler_socket_wsock::send_internal(_WSAMSG*, int)':
    ../../../../src/winsup/cygwin/fhandler_socket_inet.cc:1381:69: error: suggest parentheses around assignment used as truth value [-Werror=parentheses]

Diff:
---
 winsup/cygwin/fhandler_socket_inet.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/winsup/cygwin/fhandler_socket_inet.cc b/winsup/cygwin/fhandler_socket_inet.cc
index 2b50671e5..71e92e341 100644
--- a/winsup/cygwin/fhandler_socket_inet.cc
+++ b/winsup/cygwin/fhandler_socket_inet.cc
@@ -1378,7 +1378,7 @@ fhandler_socket_wsock::send_internal (struct _WSAMSG *wsamsg, int flags)
      buffer which only gets partially written. */
   for (DWORD in_idx = 0, in_off = 0;
        in_idx < wsamsg->dwBufferCount;
-       in_off >= wsamsg->lpBuffers[in_idx].len && (++in_idx, in_off = 0))
+       in_off >= wsamsg->lpBuffers[in_idx].len && (++in_idx, (in_off = 0)))
     {
       /* Split a message into the least number of pieces to minimize the
 	 number of WsaSendTo calls.  Don't split datagram messages (bad idea).