Merge pull request #1997 from knapo/master

Make `ActiveRecord::Batches#find_each` to not return `self`.

activerecord/lib/active_record/relation/batches.rb

@@ -20,8 +20,6 @@ def find_each(options = {})
       find_in_batches(options) do |records|
         records.each { |record| yield record }
       end
-
-      self
     end
 
     # Yields each batch of records that was found by the find +options+ as

activerecord/test/cases/batches_test.rb

@@ -18,6 +18,13 @@ def test_each_should_excecute_one_query_per_batch
     end
   end
 
+  def test_each_should_not_return_query_chain_and_execcute_only_one_query
+    assert_queries(1) do
+      result = Post.find_each(:batch_size => 100000){ }
+      assert_nil result
+    end
+  end
+
   def test_each_should_raise_if_select_is_set_without_id
     assert_raise(RuntimeError) do
       Post.find_each(:select => :title, :batch_size => 1) { |post| post }