Fix usegroup; it should use "," instead of ";"

Author: chris-l

node_translators/usegroup.js

@@ -5,25 +5,26 @@
  * Usage declaration
  */
 module.exports = function (node, indent) {
- var str = 'use' + this.ws, items = [], glue;
+ var str = 'use' + this.ws, items, glue;
  if (node.type) {
  str += node.type + this.ws;
  }
- node.items.forEach(function (item) {
+
+ items = (node.items || []).map(function (item) {
  var useItem = item.name;
  if (item.alias) {
  useItem += ' as ' + item.alias;
  }
- useItem += ';';
- items.push(useItem);
+ return useItem;
  });
+
  if (node.items.length > 1) {
  glue = this.nl + indent + this.indent;
  str += node.name + this.ws + '{' + glue;
- str += items.join(glue) + this.nl;
+ str += items.join(',' + glue) + this.nl;
  str += indent + '};' + this.nl;
  } else {
- str += items[0] + this.nl;
+ str += items[0] + ';' + this.nl;
  }
  return str;
 };