Abort broken tighter resolution suppression. Closes #4431

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4140 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/lib/active_record/base.rb

@@ -1242,8 +1242,6 @@ def compute_type(type_name)
           begin
             instance_eval(modularized_name)
           rescue NameError => e
-            first_module = modularized_name.split("::").first
-            raise unless e.to_s.include? first_module
             instance_eval(type_name)
           end
         end