fs/ntfs3: Fix transform resident to nonresident for compressed files

[ Upstream commit 25610ff9 ]

Сorrected calculation of required space len (in clusters)
for attribute data storage in case of compression.

Fixes: be71b5cb ("fs/ntfs3: Add attrib operations")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>