Pull request 6215 still not in 3-2-stable

It's because the last few releases were security releases, which are
created by applying just one or two patches to the last release that
was tagged, IIRC. It should be in the next 'normal' release of
3-2-stable.

From this comment: https://github.com/rails/rails/pull/6215#issuecomment-5856231

I don’t think it will ever be in 3-2-stable.

Ah, yes, my assumption was that the commit was already applied to
3-2-stable, if it isn't applied yet, then that's different.