[Bug tree-optimization/73550] Another wrong -Wmaybe-uninitialized warning in switch statement

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=73550

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
If you fix that then the issue is that predicate::init_from_control_deps, when
failing to process any edge will fatally fail.  In this case we have a case
label with a range which isn't handled.