"refInFor" searches upwards of inline-template boundary

[mernst-github]

Version

2.6.11

Reproduction link

https://jsfiddle.net/b71adnym/2/

Steps to reproduce

Nest a component with an inline-template that has a ref in a v-for.

What is expected?

component.$ref.ref should point to the respective element.

What is actually happening?

component.$ref.ref is a singleton array with the element reference.

---

checkInFor loops over the element ancestors up to the document root, so it believes that the ref is in a loop, but it actually isn't.
The check should stop at the component root.

[mernst-github]

A patch like this seems to fix the issue for me:

    function checkInFor(el) {
        var parent = el;
        while (parent) {
            if (parent.attrsMap['inline-template'] != null) {
                return false
            }
            if (parent.for !== undefined) {
                return true
            }
            parent = parent.parent;
        }
        return false
    }