[Bug bootstrap/67030] [6 Regression] ARM bootstrap failure due to [-Werror=tautological-compare]

[christian.joensson at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67030

--- Comment #12 from Christian Joensson <christian.joensson at gmail dot com> 
---
Still...
../../gcc/ipa-devirt.c: In function ‘bool types_same_for_odr(const_tree,
const_tree, bool ’:
../../gcc/ipa-devirt.c:553:8: error: self-comparison always evaluates to false
[-Werror=tautological-compare]
        != (TYPE_BINFO (type1) == NULL_TREE))
        ^