Only check RubyVM on CRuby
Blind use of the RubyVM constant here prevents this test from running on non-CRuby. This patch guards it with RUBY_ENGINE == "ruby" to make sure that doesn't happen.
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Only check RubyVM on CRuby
Blind use of the RubyVM constant here prevents this test from
running on non-CRuby. This patch guards it with RUBY_ENGINE ==
"ruby" to make sure that doesn't happen.