Consistenly assign Broadlink.devices keys with macAddress.toString('h…

…ex') (#22)

* Consistenly assign the key on Broadlink.devices with macAddress.toString('hex')

---------

Co-authored-by: Cameron <32912464+kiwi-cam@users.noreply.github.com>
Co-authored-by: Octavi Font <octavi@octavifs.com>

index.js

@@ -223,7 +223,7 @@ class Broadlink extends EventEmitter {
   addDevice (host, macAddress, deviceType) {
     const { log, debug } = this;
 
-    if (this.devices[macAddress]) return;
+    if (this.devices[macAddress.toString('hex')]) return;
 
     const isHostObjectValid = (
       typeof host === 'object' &&
@@ -237,7 +237,7 @@ class Broadlink extends EventEmitter {
 
     // Mark is at not supported by default so we don't try to
     // create this device again.
-    this.devices[macAddress] = 'Not Supported';
+    this.devices[macAddress.toString('hex')] = 'Not Supported';
 
     // Ignore devices that don't support infrared or RF.
     if (unsupportedDeviceTypes[parseInt(deviceType, 16)]) return null;
@@ -258,7 +258,7 @@ class Broadlink extends EventEmitter {
     device.log = log;
     device.debug = debug;
 
-    this.devices[macAddress] = device;
+    this.devices[macAddress.toString('hex')] = device;
 
     // Authenticate the device and let others know when it's ready.
     device.on('deviceReady', () => {