1.9.3-p0 nokogiri segfault fix

gistfile1.diff

diff --git a/lib/nokogiri/xml/node_set.rb b/lib/nokogiri/xml/node_set.rb
index 37b3848..cb99cdd 100644
--- a/lib/nokogiri/xml/node_set.rb
+++ b/lib/nokogiri/xml/node_set.rb
@@ -234,8 +234,8 @@ module Nokogiri
 
       ###
       # Iterate over each node, yielding  to +block+
-      def each(&block)
-        0.upto(length - 1) do |x|
+      def each
+        length.times do |x|
           yield self[x]
         end
       end