tree 6f399eaeb950ea0ce179115e9a6edf76d2a96ce3
parent a6eb0d1794880492a5779fd8e871eb9ceb3e8737
author Ethan <ethan.too@gmail.com> 1279720625 +0800
committer Ethan <ethan.too@gmail.com> 1279720625 +0800

Fix an out of boundary access in fat.c

    From SD Specifications Part2 - File System
    For Next Free Cluster, value FFFFFFFFh indicates that there exists
    no information about the first available (free) cluster. It is a
    valid value. However fat.c doesn't check the value before use it
    as array index. This will cause fsck_msdos coredump with some
    micro sd cards

Change-Id: Ibdec1655399d95c3ca98a4f4aaed1fd9bf459f33
Signed-off-by: Ethan <ethan.too@gmail.com>