Crash on startup on some android devices

[andreabadesso]

The crash happens after I start listening:

const client = new Zeroconf()

client.scan('hubot', 'tcp', 'local.')

Here is a crash log from an Asus ZenPhone3 (ASUS_Z017DC):

Fatal Exception: java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()' on a null object reference
       at android.os.Parcel.readException(Parcel.java:1949)
       at android.os.Parcel.readException(Parcel.java:1889)
       at android.net.wifi.IWifiManager$Stub$Proxy.acquireMulticastLock(IWifiManager.java:1588)
       at android.net.wifi.WifiManager$MulticastLock.acquire(WifiManager.java:3315)
       at com.balthazargronon.RCTZeroconf.ZeroconfModule.scan(ZeroconfModule.java:90)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:372)
       at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:151)
       at com.facebook.react.bridge.queue.NativeRunnable.run(NativeRunnable.java)
       at android.os.Handler.handleCallback(Handler.java:789)
       at android.os.Handler.dispatchMessage(Handler.java:98)
       at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:27)
       at android.os.Looper.loop(Looper.java:169)
       at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:226)
       at java.lang.Thread.run(Thread.java:764)