t/clar: fix whitespace errors

Fix whitespace errors in the clar that make git-apply(1) unhappy. This
has been cherry-picked from the upstream pull request at [1].

[1]: clar-test/clar#97

Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: pks-t