contrib/upnp: fix build after e29343db7852f91e377915a0c8205a5efa03680d
contrib/upnp: fix build after e29343db7852f91e377915a0c8205a5efa03680d

The indentation was causing the variables to be associated with the
checksum rule above it.

Signed-off-by: Thomas Guillem <5f50a84c1fa3bcff146405017f36aec1a10a9e38@gllm.fr>

xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc