* agent/command-ssh.c (get_client_info): Use LOCAL_PEERCRED.
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LOCAL_PEERUID was wrong (while there is LOCAL_PEERUUID).
For FreeBSD and macOS, we can use LOCAL_PEERCRED to get uid.
GnuPG-bug-id: 3757
Fixes-commit: 28aa6890588cc108639951bb4bef03ac17743046
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>