Revert "test/test_extilibs.rb: do not check the existence of fiddle"
This reverts r58761 since fiddle is considered critical. [ruby-core:81201] [ruby-core:81203]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58764 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Revert "test/test_extilibs.rb: do not check the existence of fiddle"
This reverts r58761 since fiddle is considered critical.
[ruby-core:81201] [ruby-core:81203]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58764 b2dd03c8-39d4-4d8f-98ff-823fe69b080e