rubinius/rubinius — pull request #1593 by ryoqun (2012-03-06 13:07:06+00:00)
Title: Use GC zone predicates wherever possible

This is a minor clean-up.

In some places, GC zone predicates are used. In others, they aren't for no apparent reason. I think this isn't very good in the consistency and clean-code-base standpoint.

It's clearer to use predicates rather than in-place equality expressions. So, I changed to use GC zone predicates wherever possible.