* lib/benchmark.rb (Benchmark::Job::item): avoid modifying the

  argument unintentionally.  [ruby-talk:253676]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12418 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/benchmark.rb b/lib/benchmark.rb
index 36e593518f..c7c3935131 100644
--- a/lib/benchmark.rb
+++ b/lib/benchmark.rb
@@ -331,7 +331,7 @@ module Benchmark
     #
     def item(label = "", &blk) # :yield:
       raise ArgmentError, "no block" unless block_given?
-      label.concat ' '
+      label += ' '
       w = label.length
       @width = w if @width < w
       @list.push [label, blk]