curses: Fixes compiler error that complain don't have langinfo.h on msys2/mingw

msys2/mingw lacks the POSIX-required langinfo.h.

gcc test.c -DNCURSES_WIDECHAR -I/mingw64/include/ncursesw -pipe -lncursesw -lgnurx -ltre -lintl -liconv
test.c:4:10: fatal error: langinfo.h: No such file or directory
    4 | #include <langinfo.h>
      |          ^~~~~~~~~~~~
compilation terminated.

So we using g_get_codeset instead of nl_langinfo(CODESET)

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20201012234348.1427-3-luoyonggang@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/configure b/configure
index 1b63488521..71a574f718 100755
--- a/configure
+++ b/configure
@@ -3530,17 +3530,14 @@ if test "$curses" != "no" ; then
 #include <locale.h>
 #include <curses.h>
 #include <wchar.h>
-#include <langinfo.h>
 int main(void) {
-  const char *codeset;
   wchar_t wch = L'w';
   setlocale(LC_ALL, "");
   resize_term(0, 0);
   addwstr(L"wide chars\n");
   addnwstr(&wch, 1);
   add_wch(WACS_DEGREE);
-  codeset = nl_langinfo(CODESET);
-  return codeset != 0;
+  return 0;
 }
 EOF
   IFS=: