Merge pull request #7294 from stevecj/fix-psql-reconnect-after-simulated-disconnect-test

Fix only-once stub logic.

activerecord/test/cases/adapters/postgresql/connection_test.rb

@@ -92,9 +92,9 @@ def test_reconnection_after_simulated_disconnection_with_verify
         def query_fake(*args)
           if !( @called ||= false )
             self.stubs(:status).returns(PGconn::CONNECTION_BAD)
+            @called = true
             raise PGError
           else
-            @called = true
             self.unstub(:status)
             query_unfake(*args)
           end