follower 2064b30fce
Fix check_for_unsupported_macos() on outdated releases
Recent commit 36dbad3922 to default to frozen string literals (via `frozen_string_literal`) broke `check_for_unsupported_macos()` on outdated releases--due to attempted modification of a frozen string literal.

This breaks `install` and `doctor`.

It's like the change wasn't tested on an unsupported outdated release or something... :D

Adding a `+` prefix is apparently one way around this issue according to https://stackoverflow.com/questions/37799296/what-does-the-comment-frozen-string-literal-true-do#37799399. The change worked for me.
2019-04-24 15:02:13 +12:00
..
2019-04-20 13:27:36 +09:00
2019-04-20 13:27:36 +09:00