* include/ruby/intern.h: fix a typo of prototype declaration. rb_mutex_try_lock -> rb_mutex_trylock [ruby-dev:43213]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31772 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r31028 from trunk into ruby_1_9_2.¶
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31772 b2dd03c8-39d4-4d8f-98ff-823fe69b080e