[Bug middle-end/56574] False possibly uninitialized variable warning

[luto at mit dot edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56574

--- Comment #10 from Andy Lutomirski <luto at mit dot edu> ---
See PR59500 for another example without &&.  I think I can reduce another test
case with only if and else.