* sample/list.rb (MyElem#initialize): initialize @head

  explicitely. Otherwise -W2 option makes following warning.
  "warning: instance variable @head not initialized".
  This issue was founded by Andrew Grimm. Thanks Andrew!
  [ruby-core:35435][Bug#4471]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31032 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/sample/list.rb b/sample/list.rb
index 221f7edb16..85899ce7ff 100644
--- a/sample/list.rb
+++ b/sample/list.rb
@@ -5,6 +5,7 @@ class MyElem
     # @variables are instance variable, no declaration needed
     @data = item
     @succ = nil
+    @head = nil
   end
 
   def data