[mllike mode] Don't treat (*) as a comment

Closes codemirror#6870

Author: marijnh

mode/mllike/mllike.js

@@ -60,7 +60,7 @@ CodeMirror.defineMode('mllike', function(_config, parserConfig) {
  }
  }
  if (ch === '(') {
- if (stream.eat('*')) {
+ if (stream.match(/^\*(?!\))/)) {
  state.commentLevel++;
  state.tokenize = tokenComment;
  return state.tokenize(stream, state);