w32: Fix locating gpgconf on 64 bit systems.
* src/w32-util.c (find_program_at_standard_place): Use access to check whether the binary is at CSIDL_PROGRAM_FILES before testing CSIDL_PROGRAM_FILESX86.
- Suggested-by: ticho
- Fixes-commit: a82e9b182f62966207cad0972be6fa284329a5a1
- GnuPG-bug-id: T2814
- Signed-off-by: Werner Koch <wk@gnupg.org>