ptserver: Remove redundant braces

Doing if ((a==b)) is unecessary. It's also potentially dangerous, as
that's the syntax required to do assignment within an if statement.
clang now issues warnings (errors in -Werror mode) when it encounters
these.

Remove pointless braces from ptserver to make clang happy.

Reviewed-on: http://gerrit.openafs.org/7080
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: Derrick Brashear <shadow@dementix.org>
(cherry picked from commit 4d4e4dde7c0efcf238251b1ea1dc3933810062d0)

Change-Id: I4aad6766fc759895c8bffc16dde06169589f64ba
Reviewed-on: http://gerrit.openafs.org/10737
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>