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packet_writel() takes a variable-sized list and reads to the first NULL. Let's let the compiler know so that it can help us catch mistakes in the callers. This should have been annotated similarly when it was a static function, but it's doubly important now that the function is available to the whole code-base. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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