tablet: catch potential segfault if the filter fails to allocate

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

diff --git a/src/evdev-tablet.c b/src/evdev-tablet.c
index 940a1e0..d751f2f 100644 (file)
--- a/src/evdev-tablet.c
+++ b/src/evdev-tablet.c
@@ -1599,6 +1599,8 @@ tablet_init_accel(struct tablet_dispatch *tablet, struct evdev_device *device)
 
        filter = create_pointer_accelerator_filter_tablet(x->resolution,
                                                          y->resolution);
+       if (!filter)
+               return -1;
 
        rc = evdev_device_init_pointer_acceleration(device, filter);
        if (rc != 0)