Fix crash when wifi interface is down

Fix #29

Author: jabdoa2

custom_components/openwrt/coordinator.py

@@ -54,6 +54,8 @@ async def discover_wireless(self) -> dict:
                 if item.get('disabled', False):
                     continue
                 for iface in item['interfaces']:
+                    if 'ifname' not in iface:
+                        continue
                     conf = dict(ifname=iface['ifname'],
                                 network=iface['config']['network'][0])
                     if iface['config']['mode'] == 'ap':
@@ -326,4 +328,4 @@ def new_coordinator(hass, config: dict, all_devices: dict) -> DeviceCoordinator:
     _LOGGER.debug(f"new_coordinator: {config}, {all_devices}")
     connection = new_ubus_client(hass, config)
     device = DeviceCoordinator(hass, config, connection, all_devices)
-    return device
+    return device