tools:gpg-connect-agent: Fix use of HANDLE on Windows.
* tools/gpg-connect-agent.c [HAVE_W32_SYSTEM] (do_open): Use %p to format the HANDLE. [HAVE_W32_SYSTEM] (do_close): Use gnupg_parse_fdstr to parse the string representation of the HANDLE. Use %p.
- GnuPG-bug-id: T6508
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>