[Bug c++/70922] -Wparentheses warning should not complain about if-else from macro expansion

[palves at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70922

--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
There's no ambiguous else in sight, the macro is written that way to avoid
dangling if/else problems, and the indentation is correct.  It very much looks
like a false positive to me.