Fix mem_max_rss measurement on macOS #173
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On BSD/darwin, ru_maxrss is defined in "bytes", unlike Linux where it is "kilobytes". Therefore, this code was wrongly multiplying the result by 1024. Rather than just fixing it here, it seems better to reuse the already correct `get_max_rss` function (used for calculating `command_max_rss`) elsewhere.
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On BSD/darwin, ru_maxrss is defined in "bytes", unlike Linux where it is "kilobytes". Therefore, this code was wrongly multiplying the result by 1024. Rather than just fixing it here, it seems better to reuse the already correct
get_max_rssfunction (used for calculatingcommand_max_rss) elsewhere.