Fix Ruby binding test so that it doesn't leave an unclosed handle to the  wc.db file that can't be deleted during TestCase#cleanup on windows and  fouls up the setup of the next test.
Fix Ruby binding test so that it doesn't leave an unclosed handle to the 
wc.db file that can't be deleted during TestCase#cleanup on windows and 
fouls up the setup of the next test.

* subversion/bindings/swig/ruby/test/test_client.rb
  (SvnClientTest#test_cleanup): Don't create an Svn::Wc::AdmAcess instance 
   that can't be destroyed and doesn't affect the test outcome.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion