Don't allow for scroll distances of 0 (#49965)
Don't allow for scroll distances of 0 (#49965)

It'll either hang the server or blow up with divisions by 0, whichever one
comes first.

X.Org Bug 49965 <http://bugs.freedesktop.org/show_bug.cgi?id=49965>

Signed-off-by: Peter Hutterer <b9c50af7afa7642f6f854434cda9ffe54ece8b85@who-t.net>
Reviewed-by: Chase Douglas <69e02ec421aa70a149511825d897f2549ceee9a2@canonical.com>

mad-s/xf86-input-synaptics-absolute,mad-s/xf86-input-synaptics-absolute