Refs 32637 -- Made technical 404 debug page display exception message when URL is resolved.
Follow up to
<body>
<div id="summary">
<h1>Page not found <span>(404)</span></h1>
- {% if reason %}<pre class="exception_value">{{ reason }}</pre>{% endif %}
+ {% if reason and resolved %}<pre class="exception_value">{{ reason }}</pre>{% endif %}
<table class="meta">
<tr>
<th>Request Method:</th>
