kill warnings on 1.8.7 [#4331 state:resolved]

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

activerecord/test/cases/associations/belongs_to_associations_test.rb

@@ -35,11 +35,11 @@ def test_belongs_to_with_primary_key
   def test_belongs_to_with_primary_key_joins_on_correct_column
     sql = Client.joins(:firm_with_primary_key).to_sql
     if current_adapter?(:MysqlAdapter)
-      assert_no_match /`firm_with_primary_keys_companies`\.`id`/, sql
-      assert_match /`firm_with_primary_keys_companies`\.`name`/, sql
+      assert_no_match(/`firm_with_primary_keys_companies`\.`id`/, sql)
+      assert_match(/`firm_with_primary_keys_companies`\.`name`/, sql)
     else
-      assert_no_match /"firm_with_primary_keys_companies"\."id"/, sql
-      assert_match /"firm_with_primary_keys_companies"\."name"/, sql
+      assert_no_match(/"firm_with_primary_keys_companies"\."id"/, sql)
+      assert_match(/"firm_with_primary_keys_companies"\."name"/, sql)
     end
   end