Also fix tag leak in railsbench

Author: byroot

benchmarks/railsbench/benchmark.rb

@@ -29,6 +29,7 @@
     unless response_array.first == 200
       raise "HTTP response is #{response_array.first} instead of 200. Is the benchmark app properly set up? See README.md."
     end
+    response_array.last.close # Response might be a Rack::BodyProxy and MUST be closed.
   end
 end
 

benchmarks/railsbench/popular_lines.rb

@@ -22,6 +22,7 @@ def run_bench(app, visiting_routes)
       p response_array
       raise "HTTP response is #{response_array.first} instead of 200. Is the benchmark app properly set up? See README.md."
     end
+    response_array.last.close # Response might be a Rack::BodyProxy and MUST be closed.
   end
 end
 

benchmarks/railsbench/popular_methods.rb

@@ -20,6 +20,7 @@ def run_bench(app, visiting_routes)
       p response_array
       raise "HTTP response is #{response_array.first} instead of 200. Is the benchmark app properly set up? See README.md."
     end
+    response_array.last.close # Response might be a Rack::BodyProxy and MUST be closed.
   end
 end