Optional nested params are not marked as such

[Satyam]

/**
 * @event change
 * @param ev {EventFacade} containing:
 * @param [ev.name] {String} Name of the field changed
*/

name is not getting marked as optional in the output.

Neither do these:

• @param ev.[name] {String} Name of the field changed
• @param {String} [ev.name] Name of the field changed

Non-nested optional arguments work just fine.
Starting YUIDoc@0.3.19 using YUI@3.6.0 with NodeJS@0.6.10

[davglass]

Fix is in yuidocjs@0.3.22