error.c: fix doc [ci skip]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53811 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
error.c: fix doc [ci skip]
argument positions. optional parameters except for the message
are placed at the last.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53811 b2dd03c8-39d4-4d8f-98ff-823fe69b080e