dojox.json.schema.validate incorrectly reports NULL as valid when object specified

[Greg Girty]

In the following example, a required object property is validated when only NULL is present:

require(['dojo', 'dojox/json/schema'], function(){

    var s = {properties:{foo:
        {type:['object'], 
        optional:false, 
        properties:{a:{optional:false,type:'string'}} 
        }
    }}
    
    /* Should these not both fail validation?*/
    console.log(dojox.json.schema.validate({foo:null}, s)); // valid is true
    console.log(dojox.json.schema.validate({foo:{}}, s)); // valid is false

});

[Greg Girty]

Proposed fix, replaced first long if clause in function checkType

[dylan]

Ticket planning... move current 1.13 tickets out to 1.15 to make it easier to move tickets into the 1.13 milestone.