rules must reference this.rules in renderInline

lib/renderer.js

@@ -296,10 +296,11 @@ function Renderer() {
 
 
 Renderer.prototype.renderInline = function (tokens, options) {
-  var result = '';
+  var result = '',
+      _rules = this.rules;
 
   for (var i = 0, len = tokens.length; i < len; i++) {
-    result += rules[tokens[i].type](tokens, i, options);
+    result += _rules[tokens[i].type](tokens, i, options);
   }
 
   return result;