salvage: update inodes array after CopyAndSalvage

salvage: update inodes array after CopyAndSalvage

CopyAndSalvage makes a copy of the directory to salvage it. So, the
new directory will have a new inode. Update the array of directory
inodes to reflect this. Without this, we can fail to alter the
copied/salvaged directory later on, since we will try to read/write to
the wrong inode.

Change-Id: I2466981e8ee54c5aecf1a166a37d8146b126de24
Reviewed-on: http://gerrit.openafs.org/2530
Tested-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>