x86/boot: Fix minor fd leakage in tools/relocs.c

The opened file should be closed.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
Cc: Kusanagi Kouichi <slash@ac.auone-net.jp>
Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Matt Fleming <matt.fleming@intel.com>
Link: http://lkml.kernel.org/r/1358183628-27784-1-git-send-email-dinggnu@gmail.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>