LINUX/osi_vnodeops.c: minor coding style fixes

LINUX/osi_vnodeops.c: minor coding style fixes

Re-indent and correct a few coding style issues in this section
of code.  In particular, it clears up possible confusion on the
scope of the preceding if statement.

Purely cosmetic, no functional changes.

Change-Id: Id6dea6326c9878b41f821de00267f75195fea394
Reviewed-on: http://gerrit.openafs.org/2989
Reviewed-by: Matt Benjamin <matt@linuxbox.com>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>