oss-fuzz: mark unused argv/argc argument
The dummy fuzz cmd_main() does not look at its argc/argv parameters
(since it should never even be run), but has to match the usual
cmd_main() declaration.
Mark them to silence -Wunused-parameter.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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