merge revision(s) 49202: [Backport #10668]
* ext/zlib/zlib.c: fix document of method signatures. [Bug #10668][ruby-core:67186][ci skip]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@49382 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 49202: [Backport #10668]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@49382 b2dd03c8-39d4-4d8f-98ff-823fe69b080e