[newlib-cygwin/cygwin-3_4-branch] Cygwin: Fix __cpuset_zero_s prototype

[newlib-cygwin/cygwin-3_4-branch] Cygwin: Fix __cpuset_zero_s prototype

[Jon Turney]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=8ca815618d03a08bbe7cd2288cfb291ea2ae15a1

commit 8ca815618d03a08bbe7cd2288cfb291ea2ae15a1
Author: Mark Geisert <mark@maxrnd.com>
Date:   Thu Sep 7 22:36:39 2023 -0700

    Cygwin: Fix __cpuset_zero_s prototype
    
    Add a missing "void" to the prototype for __cpuset_zero_s().
    
    Reported-by: Marco Mason <marco.mason@gmail.com>
    Addresses: https://cygwin.com/pipermail/cygwin/2023-September/254423.html
    Signed-off-by: Mark Geisert <mark@maxrnd.com>
    Fixes: c6cfc99648d6 (Cygwin: sys/cpuset.h: add cpuset-specific external functions)
    (cherry picked from commit 003fc339425b28283f86a05cdb9cbfb194167222)

Diff:
---
 winsup/cygwin/include/sys/cpuset.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/winsup/cygwin/include/sys/cpuset.h b/winsup/cygwin/include/sys/cpuset.h
index a5a8fa81e..3d0874880 100644
--- a/winsup/cygwin/include/sys/cpuset.h
+++ b/winsup/cygwin/include/sys/cpuset.h
@@ -48,7 +48,7 @@ void __cpuset_free (cpu_set_t *);
 
 /* These _S macros operate on dynamically-sized cpu sets of size 'siz' bytes */
 #define CPU_ZERO_S(siz, set) __cpuset_zero_s (siz, set)
-static __inline
+static __inline void
 __cpuset_zero_s (__size_t siz, cpu_set_t *set)
 {
 #if __GNUC_PREREQ (2, 91)