Unix CM: Fix stray semicolon

Commit d2437d02a6f59d972dd0690f7eb1c46cf7cc4b85 introduced a
stray semicolon in the osidnlc code. Fix it.

Caught by coverity (#989030)

Reviewed-on: http://gerrit.openafs.org/9321
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
(cherry picked from commit 59def405ba9404954debd35da539346b1ccd4096)

Change-Id: I35256e7b0aec95b3341db9cd1e99387b1050fab4
Reviewed-on: http://gerrit.openafs.org/9377
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Paul Smeddle <paul.smeddle@gmail.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>