* When we figure out which event a marker region should jump to if you
select the parent, we want to pick the last valid event ID that isn't
just a label. However previously this was being done by iterating over
the children and picking the last one and assuming there would be a
node of that index - which isn't true in the case where some drawcalls
were entirely omitted. It would either index out of bounds, or index
incorrectly.
baldurk
4dcb89966c