unsquashfs: fix cache used count statistic

Fix cache used count statistic (only used in statistics dumping when
^\ is hit twice).

Occasionally when dumping the statistics I noticed the cache used
count was negative.  This proved to be because I forgot to
increment the cache used count in cache lookup when the block
was found unused on the free list.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
1 file changed
tree: 960dc5f30268ebafb2b0b65edfd887ead25aedab
  1. kernel/
  2. kernel-2.4/
  3. squashfs-tools/
  4. README