thread.c: Mutex#synchronize no block params
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40000 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
thread.c: Mutex#synchronize no block params
splattael (Peter Suschlik) in [ruby-core:53773] [Bug #8097].
fix GH-266.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40000 b2dd03c8-39d4-4d8f-98ff-823fe69b080e