* lib/*.rb: Remove unused variable warnings.

Patch by Run Paint [ruby-core:30991]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rexml/parsers/xpathparser.rb

@@ -282,7 +282,6 @@ module REXML
       PI        = /^processing-instruction\(/
       def NodeTest path, parsed
         #puts "NodeTest with #{path}"
-        res = nil
         case path
         when /^\*/
           path = $'
@@ -578,7 +577,6 @@ module REXML
       NUMBER              = /^(\d*\.?\d+)/
       NT        = /^comment|text|processing-instruction|node$/
       def PrimaryExpr path, parsed
-        arry = []
         case path
         when VARIABLE_REFERENCE
           varname = $1