[newlib-cygwin/main] libgloss: i386: cygmon-gmon.c: add functions return type

[Jeff Johnston]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=959217095d0f01cc58177120b42a0f82607b9c47

commit 959217095d0f01cc58177120b42a0f82607b9c47
Author: Vincent Mailhol <mailhol@kernel.org>
Date:   Mon Nov 3 15:31:17 2025 -0500

    libgloss: i386: cygmon-gmon.c: add functions return type

Diff:
---
 libgloss/i386/cygmon-gmon.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libgloss/i386/cygmon-gmon.c b/libgloss/i386/cygmon-gmon.c
index 778dbd76d..3c2f07fed 100644
--- a/libgloss/i386/cygmon-gmon.c
+++ b/libgloss/i386/cygmon-gmon.c
@@ -247,6 +247,7 @@ _mcleanup()
 
 static char already_setup = 0;
 
+void
 _mcount()
 {
   register char			*selfpc;
@@ -269,8 +270,8 @@ _mcount()
 
   if (! already_setup) 
     {
-      extern _etext();
-      extern _ftext();
+      extern char _etext();
+      extern char _ftext();
       already_setup = 1;
       monstartup(_ftext, _etext);
       atexit(_mcleanup);