* subversion/bindings/swig/ruby/test/util.rb
  (@svnserve_pid_file): Following up on r1518270, commit the change where 
    this variable is initialized.

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1518673 13f79535-47bb-0310-9956-ffa450edef68