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

As per Jan Engelhardt's request.

Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/locking/dlm/sysfs.c

@@ -42,8 +42,9 @@ static ssize_t block_store(struct gdlm_ls *ls, const char *buf, size_t len)
 	else if (val == 0) {
 		clear_bit(DFL_BLOCK_LOCKS, &ls->flags);
 		gdlm_submit_delayed(ls);
-	} else
+	} else {
 		ret = -EINVAL;
+	}
 	return ret;
 }