[PATCH 2/3] Cygwin: avoid GCC 10 error with -Werror=narrowing

[Jon Turney]

../../../../src/winsup/cygwin/fhandler_console.cc: In member function 'const 
unsigned char* fhandler_console::write_normal(const unsigned char*, const 
unsigned char*)':
../../../../src/winsup/cygwin/fhandler_console.cc:2782:8: error: narrowing 
conversion of '-2' from 'int' to 'long unsigned int' [-Wnarrowing]
../../../../src/winsup/cygwin/fhandler_console.cc:2786:8: error: narrowing 
conversion of '-1' from 'int' to 'long unsigned int' [-Wnarrowing]
../../../../src/winsup/cygwin/fhandler_console.cc:2836:8: error: narrowing 
conversion of '-2' from 'int' to 'long unsigned int' [-Wnarrowing]
../../../../src/winsup/cygwin/fhandler_console.cc:2840:8: error: narrowing 
conversion of '-1' from 'int' to 'long unsigned int' [-Wnarrowing]

A mbtowc_p funtion returns an int, so that seems the correct type to use here.
---
 winsup/cygwin/fhandler_console.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/fhandler_console.cc 
b/winsup/cygwin/fhandler_console.cc
index 33e40a9f9..41cac37e6 100644
--- a/winsup/cygwin/fhandler_console.cc
+++ b/winsup/cygwin/fhandler_console.cc
@@ -2759,7 +2759,7 @@ fhandler_console::write_normal (const unsigned char *src,
   DWORD done;
   DWORD buf_len;
   const unsigned char *found = src;
-  size_t ret;
+  int ret;
   mbstate_t ps;
   mbtowc_p f_mbtowc;
 
@@ -2938,7 +2938,7 @@ do_print:
                {
                  ret = __utf8_mbtowc (_REENT, NULL, (const char *) found + 1,
                                       end - found - 1, &ps);
-                 if (ret != (size_t) -1)
+                 if (ret != -1)
                    while (ret-- > 0)
                      {
                        WCHAR w = *(found + 1);
-- 
2.28.0