infinite loop in dijit._onTouchNode() (_base/focus.js)

[simonjb]

When running inside the doh test runner, dijit._onTouchNode() enters an infinite loop. To reproduce:

1. apply the attached patch that illustrates the problem
2. open a FF2 browser window with firebug
3. open the firebug console
4. run the dijit tests: util/doh/runner.html?testModule=dijit.tests.module
5. when the tests have finished click on the test log text
6. should see "looping..." repeatedly logged

The attached patch disables all tests other that the Container tests. I'm getting different behaviour when all tests are enabled. Instead of an infinite loop I am seeing initially an error "s has no properties", followed by a series of "dijit is not defined" errors when I click on the test log text.

[bill]

(In [9923]) Fix infinite loop when dojo itself is running in an iframe. Fixes #3956.