staging: lustre: libcfs: Remove unnecessary braces

Removed unncessary braces from the if-else block to remove the
following checkpatch.pl warning:
WARNING: braces {} are not necessary for any arm of this statement

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>