[fix][template][oscar] print ',' only if postcode is found

searx/templates/oscar/result_templates/map.html

@@ -20,8 +20,8 @@
         </span><br/>
     {% endif %}
     {% if result.address.locality %}
-        <span itemprop="addressLocality">{{ result.address.locality }}</span>,
-        {% if result.address.postcode %} <span itemprop="postalCode">{{ result.address.postcode }}</span>{% endif %}
+        <span itemprop="addressLocality">{{ result.address.locality }}</span>
+        {% if result.address.postcode %}, <span itemprop="postalCode">{{ result.address.postcode }}</span>{% endif %}
         <br/>
     {% endif %}
     {% if result.address.country %}