fix trailing whitespaces

Signed-off-by: amineorion <amineorion@gmail.com>
fix trailing whitespaces

Signed-off-by: amineorion <amineorion@gmail.com>
fix latest

Signed-off-by: amineorion <amineorion@gmail.com>

Conflicts:
	examples/rosettacode/hailstone.nit