Don't call with NULL
Remove unused return value

Signed-off-by: Rafaël Carré <funman@videolan.org>

Fix incorrect redirection given in "Location: http://host/path "
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

This partially reverts commit 99ebae0c.
(see http://techbase.kde.org/Development/Tutorials/Solid/Device_Actions)

Hexadecimal bitmasks are easier to read.

This is required by the next commit. This also avoids making two copies
on non-x86 platforms, where USWC optimizations are irrelevant.

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>