Address https://bugs.kde.org/show_bug.cgi?id=429424#c5 ,

> [...]
> As a side note, unfortunately I can still not use valgrind with
> umbrello (also tried kmail, gave similar trace with "??? (in
> /memfd:sljit (deleted))", see below) but that's another issue.

umbrello/debug/debug_utils.{h,cpp}
- Apparently the __static_initialization_and_destruction_0 elaboration
  of Tracer static variables s_classes and s_states is done in an
  unexpected order. Change them from value to pointer and allocate their
  instances in function Tracer::instance().