test_optparse.rb: skip no_error in backtrace
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40041 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_optparse.rb: skip no_error in backtrace
prefix with assert_ so it will be skipped in backtrace.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40041 b2dd03c8-39d4-4d8f-98ff-823fe69b080e