Mark nearInode as unused

Mark nearInode as unused

When we're building an inode fileserver, we use the nearInode hint.
The IH_CREATE macro just throws this hint away if we're building namei,
which leads to compiler warnings about set-but-unused variables. Just
flag nearInode as being potentially unused in order to suppress these
warnings.

Change-Id: I25022dc859974e9311e4530a9eeee8ab1d77c373
Reviewed-on: http://gerrit.openafs.org/4999
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>