The multiple filter query with last() function

[zhengchun]

<root>
	<test foo="bar">First</test>
	<test foo="bar">Second</test>
	<test foo="xyz">Third</test>
</root>

Test:

• [//test[@foo='bar'])/[last()]`

This from #76

expected:

<test foo="bar">Second</test>

actually:

not found

• //test[@foo='bar'][last()]

expected

<test foo="bar">Second</test>

actually:

not found

[zhengchun]

fixed https://github.com/antchfx/xpath/releases/tag/v1.2.3