Regression with snprintf in MinGW-w64 targeting Win32

There are projects that their configure rely on the check `AC_CHECK_FUNC([snprintf]`.

In Ubuntu jammy, this ran without any error:

`
docker run --rm -i ghcr.io/nanake/byouri/ubuntu-jammy-win32:latest bash -s <<-EOF
    {
      echo "char snprintf();"
      echo
      echo "int main () { return snprintf (); }"
    } >> snprintftest.c
    i686-w64-mingw32-gcc -Wall snprintftest.c
EOF
`

`
snprintftest.c:1:6: warning: conflicting types for built-in function 'snprintf'; expected 'int(char *, unsigned int, const char *, ...)' [-Wbuiltin-declaration-mismatch]
    1 | char snprintf();
      | ^~~~~~~~
snprintftest.c:1:1: note: 'snprintf' is declared in header '<stdio.h>'
  +++ |+#include <stdio.h>
    1 | char snprintf();
`

But ubuntu kinetic:

`
docker run --rm -i ghcr.io/nanake/byouri/ubuntu-kinetic-win32:latest bash -s <<-EOF
    {
      echo "char snprintf();"
      echo
      echo "int main () { return snprintf (); }"
    } >> snprintftest.c
    i686-w64-mingw32-gcc -Wall snprintftest.c
EOF
`

`
snprintftest.c:1:6: warning: conflicting types for built-in function 'snprintf'; expected 'int(char *, unsigned int, const char *, ...)' [-Wbuiltin-declaration-mismatch]
    1 | char snprintf();
      | ^~~~~~~~
snprintftest.c:1:1: note: 'snprintf' is declared in header '<stdio.h>'
  +++ |+#include <stdio.h>
    1 | char snprintf();
/usr/bin/i686-w64-mingw32-ld: /usr/lib/gcc/i686-w64-mingw32/10-win32/../../../../i686-w64-mingw32/lib/../lib/libmsvcrt.a(lib32_libmsvcrt_extra_a-_vscprintf.o): in function `_mingw_get_msvcrt_handle':
./build/i686-w64-mingw32-i686-w64-mingw32-crt/./mingw-w64-crt/include/msvcrt.h:9: undefined reference to `_imp__GetModuleHandleW@4'
collect2: error: ld returned 1 exit status
Error: Process completed with exit code 1.
`

It works with MinGW 10 targeting win64.