Add nulls for quotas as well

roles/matrix-coturn/defaults/main.yml

@@ -19,3 +19,5 @@ matrix_coturn_turn_udp_max_port: 49172
 matrix_coturn_turn_external_ip_address: "{{ ansible_host }}"
 matrix_coturn_allowed_peer_ips: []
 matrix_coturn_denied_peer_ips: []
+matrix_coturn_user_quota: null
+matrix_coturn_total_quota: null

roles/matrix-coturn/templates/turnserver.conf.j2

@@ -12,10 +12,10 @@ no-tls
 no-dtls
 prod
 no-tcp-relay
-{% if matrix_coturn_user_quota is defined %}
+{% if matrix_coturn_user_quota != None %}
 user-quota={{ matrix_coturn_user_quota }}
 {% endif %}
-{% if matrix_coturn_total_quota is defined %}
+{% if matrix_coturn_total_quota != None %}
 total-quota={{ matrix_coturn_total_quota }}
 {% endif %}
 {% for ip_range in matrix_coturn_denied_peer_ips %}