[PATCH 2/2] Cygwin: Fix compilation of c8rtomb with gcc 16

../../../../src/winsup/cygwin/strfuncs.cc: In function ‘size_t c8rtomb(char*, char8_t, mbstate_t*)’:
../../../../src/winsup/cygwin/strfuncs.cc:214:41: error: cannot bind non-const lvalue reference of type ‘char8_t&’ to a value of type ‘unsigned char’
../../../../src/winsup/cygwin/strfuncs.cc:215:41: error: cannot bind non-const lvalue reference of type ‘char8_t&’ to a value of type ‘unsigned char’
../../../../src/winsup/cygwin/strfuncs.cc:216:41: error: cannot bind non-const lvalue reference of type ‘char8_t&’ to a value of type ‘unsigned char’
---
 winsup/cygwin/strfuncs.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/winsup/cygwin/strfuncs.cc b/winsup/cygwin/strfuncs.cc
index 0cf41cefc..85427a0d1 100644
--- a/winsup/cygwin/strfuncs.cc
+++ b/winsup/cygwin/strfuncs.cc
@@ -211,9 +211,9 @@ c8rtomb (char *s, char8_t c8, mbstate_t *ps)
     {
       /* We already collected something... */
       int idx = ps->__count & 0x3;
-      char8_t &c1 = ps->__value.__wchb[0];
-      char8_t &c2 = ps->__value.__wchb[1];
-      char8_t &c3 = ps->__value.__wchb[2];
+      unsigned char &c1 = ps->__value.__wchb[0];
+      unsigned char &c2 = ps->__value.__wchb[1];
+      unsigned char &c3 = ps->__value.__wchb[2];
 
       switch (idx)
 	{
-- 
2.51.0