[Change] Git build issue on NonStop

Just a quick FYI. The addition of uintptr_t in clar tests has broken my CI build on NonStop x86. I will be fixing this locally. It may take a patch series unless a quick workaround is possible, which I am hoping.

For those on the list from my platform who are monitoring, this looks like -D__NSK_OPTIONAL_TYPES__ is now required for the build. I am unsure what else may be needed.

--Randall

-- Brief whoami: NonStop&UNIX developer since approximately UNIX(421664400) NonStop(211288444200000000) -- In real life, I talk too much.