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-rw-r--r--src/draglock.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/draglock.c b/src/draglock.c
index 631da17..8e97b0d 100644
--- a/src/draglock.c
+++ b/src/draglock.c
@@ -243,7 +243,9 @@ EvdevDragLockSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
return BadValue;
}
- if (val->size == 1)
+ if (val->size == 0)
+ return BadMatch;
+ else if (val->size == 1)
{
int meta = *((CARD8*)val->data);
if (meta > EVDEV_MAXBUTTONS)