Attribute end position incorrect when for attribute lists

[ChristianMurphy]

The early nodes over all following nodes.
Likely due to the recursive nature of the parsing:

redot/packages/redot-parse/dot.pegjs

Lines 67 to 75 in 679f865

	a_list
	= _ ida:ID eq:(_ '=' _ idb:ID {return idb})? _ ','? rest:a_list? {
	return [{
	type: 'attribute',
	name: ida,
	value: eq || undefined,
	data: {},
	position: location()
	}].concat(rest || []);