Merge pull request #47 from onaio/check-uwsgi-env-vars-are-present-before-loop

Add safe guard to check if uwsgi env variable is defined and has items

Author: JohnMwashuma

templates/uwsgi.ini.j2

@@ -37,9 +37,11 @@ buffer-size={{ django_wsgi_buffer_size }}
 {% if django_wsgi_env %}
 env={{ django_wsgi_env }}
 {% endif %}
+{% if django_wsgi_env_variables is defined and django_wsgi_env_variables %}
 {% for item, value in django_wsgi_env_variables.items() %}
 env={{ item }}={{ value }}
 {% endfor %}
+{% endif %}
 stats={{ django_wsgi_stats }}
 {% if django_wsgi_enable_threads %}
 enable-threads