test_weakmap.rb: fixing CI failures
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62748 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_weakmap.rb: fixing CI failures
the object to be garbage-collected in deeper frame.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62748 b2dd03c8-39d4-4d8f-98ff-823fe69b080e