validation mishandles anyOf

[wcarmon]

bug in conditional:

gojsonschema/validation.go

Line 183 in b076d39

if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_OBJECT) {

currentSubSchema.types.Contains(TYPE_OBJECT) returns the wrong value. It should check the items in the anyOf array

...
          "anyOf": [
            {
              "type": "null"
            },
            {
              "additionalProperties": false,
              "properties": {
                "value": {
                  "anyOf": [
                    {
                      "type": "boolean"
                    },
                    {
                      "type": "number"
                    }
                  ]
                }
              },
              "type": "object"
            }
          ]