merge revision(s) 54028: [Backport #12158]
* insns.def (opt_mod): show its method name on ZeroDivisionError. [Bug #12158]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@54271 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 54028: [Backport #12158]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@54271 b2dd03c8-39d4-4d8f-98ff-823fe69b080e