WifiStateChangeService null parse error

Comment from user:

just crashed. didn't even know it was running. maybe it just wanted to update.

Why is this running on the background when the user hasn't even started Swap? Sounds like a waste of resources.

Reported in 0.98 and 0.99.

java.lang.RuntimeException: An error occured while executing doInBackground()
        at android.os.AsyncTask$3.done(AsyncTask.java:304)
        at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
        at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
        at java.util.concurrent.FutureTask.run(FutureTask.java:242)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
        at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.IllegalArgumentException: Could not parse [null/24]
        at org.apache.commons.net.util.SubnetUtils.calculate(SubnetUtils.java:275)
        at org.apache.commons.net.util.SubnetUtils.<init>(SubnetUtils.java:62)
        at org.fdroid.fdroid.net.WifiStateChangeService$WaitForWifiAsyncTask.doInBackground(WifiStateChangeService.java:89)
        at org.fdroid.fdroid.net.WifiStateChangeService$WaitForWifiAsyncTask.doInBackground(WifiStateChangeService.java:70)
        at android.os.AsyncTask$2.call(AsyncTask.java:292)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        ... 4 more
java.lang.IllegalArgumentException: Could not parse [null/24]
        at org.apache.commons.net.util.SubnetUtils.calculate(SubnetUtils.java:275)
        at org.apache.commons.net.util.SubnetUtils.<init>(SubnetUtils.java:62)
        at org.fdroid.fdroid.net.WifiStateChangeService$WaitForWifiAsyncTask.doInBackground(WifiStateChangeService.java:89)
        at org.fdroid.fdroid.net.WifiStateChangeService$WaitForWifiAsyncTask.doInBackground(WifiStateChangeService.java:70)
        at android.os.AsyncTask$2.call(AsyncTask.java:292)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
        at java.lang.Thread.run(Thread.java:818)