Fixed db2 connection with empty user_name and auth options (closes #3622) [phurley@gmail.com]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3655 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Fixed db2 connection with empty user_name and auth options #3622 [phurley@gmail.com]
+
 * Fixed validates_length_of to work on UTF-8 strings by using characters instead of bytes #3699 [Masao Mutoh]
 
 * Fixed that reflections would bleed across class boundaries in single-table inheritance setups #3796 [lars@pind.com]

activerecord/lib/active_record/vendor/db2.rb

@@ -66,7 +66,7 @@ def initialize(environment)
     end
 
     def connect(server_name, user_name = '', auth = '')
-      check_rc(SQLConnect(@handle, server_name, user_name, auth))
+      check_rc(SQLConnect(@handle, server_name, user_name.to_s, auth.to_s))
     end
 
     def set_connect_attr(attr, value)