An obsolete comment and extra parentheses were left over from when the
sb_bgl_lock() macro was replaced with the bgl_lock_ptr() function.
Signed-off-by: NEric Biggers <ebiggers@google.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Reviewed-by: NAndreas Dilger <adilger@dilger.ca>