ifdtool: Avoid potential buffer overflow

Filenames of 4091 bytes or more lead to a buffer overflow.

Change-Id: I1b4b3932af096f0fcbfb783ab708ed273d3a844e
Found-by: Coverity Scan
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6476
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
1 file changed