dir: respect string length argument of read_directory_recursive()
A directory name is passed to read_directory_recursive() as a length-limited string, through the parameters base and baselen. Suprisingly, base must be a NUL-terminated string as well, as it is passed to opendir(), ignoring baselen. Fix this by postponing the call to opendir() until the length-limted string is added to a strbuf, which provides a NUL in the right place. Signed-off-by: NRene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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