Content blocks cannot be used more than once

If I am defining a block like this:

{{#contentFor "page_title"}}
    Dashboard Home
{{/contentFor}}

And using it like this:

<title>{{{block "page_title"}}}</title>
<h1>{{{block "page_title"}}}</h1>

The second usage doesn’t work. It seems after the first time it is used, it is cleared out (to free memory).

https://github.com/barc/express-hbs/blob/master/lib/hbs.js#L37

this.blocks[name] = null;

[bradvogel]

+1. Here’s another common use case for content blocks that breaks because of this bug:

    {{#if (block 'pageTitle')}}
    <title>{{block 'pageTitle'}}</title>
    {{/if}}

[skeggse]

This does appear to be fixed, at least on 2.3.0 (didn’t test others).