Update list-comments.js

[djbuch]

Questions	Answers
Description?	Correct a bug, where stars on additionnal products on a product page would have wrong star number, because the stars where inited before the grade retrivial
Type?	bug fix
BC breaks?	no
Deprecations?	no
Fixed ticket?
How to test?	View a product page with additionnal products having comments, without this correction they would alwas have only one star.