ArrayIndexOutOfBoundsException in CriteriaLoader.java

### Steps to Reproduce

1. define following domain class
`class mytest {
def my_data = "123"
static hasMany = [childItems: mytest]
}`
2. execute the following code

def mytest = new mytest()
mytest.save(failOnError: true, flush: true)
def tests = mytest.where { childItems.contains(mytest) }.findAll()

### Expected Behaviour

yield an empty collection

### Actual Behaviour

java.lang.ArrayIndexOutOfBoundsException in CriteriaLoader.java getResultRow line 161

`result[i] = types[i].nullSafeGet( rs, columnAliases[pos], session, null );`

columnAliases is an Array with 0 entries, while pos = 0 tries to retrieve the first element

### Environment Information

- **Operating System**: Ubuntu 16.04
- **GORM Version:** gormVersion=6.1.10.RELEASE
- **Grails Version (if using Grails):** 3.3.8
- **JDK Version:** 1.8.0_201

Start with CriteriaLoader.java, especially getResultRow around line 161, and reproduce the reported self-referential childItems query using the supplied domain class. Trace how columnAliases and pos are produced for this criteria query; done means the query returns an empty collection without an ArrayIndexOutOfBoundsException.

Written by the indexing model from the issue text.