merge revision(s) 54020: [Backport #11890]
* ext/tk/lib/tkextlib/blt/tree.rb: fix method name typo. [ruby-core:72510] [Bug #11890] The patch provided by Akira Matsuda.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@54318 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 54020: [Backport #11890]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@54318 b2dd03c8-39d4-4d8f-98ff-823fe69b080e