* lib/rexml/parent.rb (REXML::Parent#delete): return the deleted node

because the rdoc of REXML::Element#delete_element says it returns
  "the element that was removed."

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26517 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rexml/parent.rb

@@ -34,6 +34,7 @@ module REXML
       found = false
       @children.delete_if {|c| c.equal?(object) and found = true }
       object.parent = nil if found
+      found ? object : nil
     end
 
     def each(&block)