[newlib-cygwin] Cygwin: fifo: fix type of fifo_reader_id_t operators

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=2125ca8a69d0680ffe8079c15ef479f869ee35cc

commit 2125ca8a69d0680ffe8079c15ef479f869ee35cc
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Fri May 8 20:00:24 2020 +0200

    Cygwin: fifo: fix type of fifo_reader_id_t operators
    
    fifo_reader_id_t::operator == and != have been defined without type
    accidentally.  For some weird reason, only x86 gcc complains about
    this problem, not x86_64 gcc.
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/fhandler.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/fhandler.h b/winsup/cygwin/fhandler.h
index 8a23d6753..9a82d491a 100644
--- a/winsup/cygwin/fhandler.h
+++ b/winsup/cygwin/fhandler.h
@@ -1308,12 +1308,12 @@ struct fifo_reader_id_t
 
   operator bool () const { return winpid != 0 || fh != NULL; }
 
-  friend operator == (const fifo_reader_id_t &l, const fifo_reader_id_t &r)
+  friend bool operator == (const fifo_reader_id_t &l, const fifo_reader_id_t &r)
   {
     return l.winpid == r.winpid && l.fh == r.fh;
   }
 
-  friend operator != (const fifo_reader_id_t &l, const fifo_reader_id_t &r)
+  friend bool operator != (const fifo_reader_id_t &l, const fifo_reader_id_t &r)
   {
     return l.winpid != r.winpid || l.fh != r.fh;
   }