[Bug tree-optimization/90949] [9/10 Regression] null pointer check removed

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90949

--- Comment #4 from Jeffrey A. Law <law at redhat dot com> ---
Precisely.  I didn't see a helper to set pt.null to 1/true, but it's trivial
enough to add one.