Fix scoping for client, in preparation for implementation
diff --git a/src/ruby/qps/worker.rb b/src/ruby/qps/worker.rb
index 8555888..208211c 100755
--- a/src/ruby/qps/worker.rb
+++ b/src/ruby/qps/worker.rb
@@ -71,6 +71,7 @@
   def run_client(reqs)
     q = EnumeratorQueue.new(self)
     Thread.new {
+      client = ''
       reqs.each do |req|
         case req.argtype
         when 'setup'