xkb: don't update LEDs if they don't exist. (Bug #13961)

In some weird cases we call this function when there is no SrvLedInfo on the
device. And it turns out null-pointer dereferences are bad.

X.Org Bug 13961 <http://bugs.freedesktop.org/show_bug.cgi?id=13961>
(cherry picked from commit d954f9c803)
This commit is contained in:
Peter Hutterer 2008-01-30 10:39:54 +10:30 committed by Daniel Stone
parent e98027c3ac
commit bc72ef3a15

View File

@ -63,6 +63,9 @@ XkbSrvLedInfoPtr sli;
sli= XkbFindSrvLedInfo(dev,XkbDfltXIClass,XkbDfltXIId,0);
if (!sli)
return update;
if (state_changes&(XkbModifierStateMask|XkbGroupStateMask))
update|= sli->usesEffective;
if (state_changes&(XkbModifierBaseMask|XkbGroupBaseMask))