[Bug sanitizer/122013] c-c++-common/ubsan/null-12.c fails if only using -fsanitize=null without -fsanitize=alignment

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122013

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 62428
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62428&action=edit
Fix which is under testing