merge revision(s) r34350:
* encoding.c (rb_enc_compatible): fix segv on symbols. [ruby-core:42204] [Bug #5921]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34361 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) r34350:
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34361 b2dd03c8-39d4-4d8f-98ff-823fe69b080e