[Bug sanitizer/79265] [7 regression] -fsanitize=undefined inserts unnecessary null pointer tests

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79265

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This is a new warning, the fact that we didn't warn on some code and now warn
with a new warning is not necessarily a regression.