renaming test name to fix accidently override [#5076 state:resolved]

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

activerecord/test/cases/associations/has_many_associations_test.rb

@@ -548,7 +548,7 @@ def test_find_or_initialize
     assert the_client.new_record?
   end
 
-  def test_find_or_create
+  def test_find_or_create_updates_size
     number_of_clients = companies(:first_firm).clients.size
     the_client = companies(:first_firm).clients.find_or_create_by_name("Yet another client")
     assert_equal number_of_clients + 1, companies(:first_firm, :reload).clients.size