[stl_interfaces] Ok to merge small fix to C++20-mode builds before release?

From: Zach Laine (whatwasthataddress_at_[hidden])
Date: 2020-07-09 21:58:41

I have just committed a fix to develop that addresses compilation
errors in C++20 builds.   Is it too late to merge this to master?  The
change is here:

https://github.com/boostorg/stl_interfaces/commit/6d31433af0b7cb8c7f9140ce408ec70468552fa0

Zach