Regression: comments inside lists

[kcarnold]

Crashing testcase:

- This is a list item <!-- Comment: an innocent-looking comment -->

I just submitted gohugoio/hugo#9658 but I suspect that this is related to #285.

[jmooring]

Regression 1.4.8 -> 1.4.9

test.go

package main

import (
	"bytes"
	"fmt"

	"github.com/yuin/goldmark"
)

func main() {
	md := goldmark.New()

	input := `- a <!-- b -->`

	var buf bytes.Buffer
	if err := md.Convert([]byte(input), &buf); err != nil {
		panic(err)
	}

	fmt.Println(buf.String())

}

Other failing examples:

a <!-- b -->
> a <!-- b -->
[a](b) <!-- c -->
![a](b) <!-- c -->
## a <!-- b -->

[polarweasel]

Another failing example (anywhere in a table will do it):

| a <!-- b -->