[Bug tree-optimization/92765] [10 Regression] Wrong code caused by folding of -Wstring-compare since r276773

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92765

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
But isn't the case magic could be considered a variable length field since it
is st the end of the struct?