test-throttle: don't shadow 'index' variable in do_test_accounting()

Fixes build with -Wshadow=local

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-ID: <20230922105742.81317-1-berto@igalia.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
1 file changed