[GFS2] Add brackets in locking/dlm/sysfs.c
[GFS2] Add brackets in locking/dlm/sysfs.c

As per Jan Engelhardt's request.

Cc: Jan Engelhardt <f383ed465f890d2e8ea864dd0c28cf8ec50a8942@linux01.gwdg.de>
Signed-off-by: Steven Whitehouse <9801c4ef11586b619a1c43ac9377eea2aee672dd@redhat.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs