The analogous heap_strndupW already does this. Fixes InternetCrackUrlA
behavior when passed a dwUrlLength that's past the end of the string.
Signed-off-by: Tim Clem <tclem@codeweavers.com>
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>