* test/psych/test_emitter.rb: Fix line_width test...initial value
  is impl-specific and attr assignment always returns LHS.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48214 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-11-01

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48215 b2dd03c8-39d4-4d8f-98ff-823fe69b080e