Import config file fails with nullpointer exception (if no waypoints array in file)

[boogymantoo]

• App build number: 21302
• Android version: issue present on 5.1 as well as 9
• Device: Motorola Moto G (Android 5.1) and Samsung S9+ (Android 9)

When trying to import a configuration file that contains no waypoints, I get an error. If it would be important: I have no waypoints defined in the app either. Simply adding an empty waypoints array works around the issue. Here-below is a copy-paste taken from the debug-log.

za mei 02 2020 at 12:09:42:335 p.m./6/LoadActivity : load exception java.lang.NullPointerException: Attempt to invoke virtual method 'int org.owntracks.android.support.MessageWaypointCollection.size()' on a null object reference at org.owntracks.android.ui.preferences.load.LoadViewModel.setConfiguration(LoadViewModel.java:48) at org.owntracks.android.ui.preferences.load.LoadActivity.extractPreferences(LoadActivity.java:169) at org.owntracks.android.ui.preferences.load.LoadActivity.onActivityResult(LoadActivity.java:134) at android.app.Activity.dispatchActivityResult(Activity.java:8292) at android.app.ActivityThread.deliverResults(ActivityThread.java:5090) at android.app.ActivityThread.handleSendResult(ActivityThread.java:5138) at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:237) at android.app.ActivityThread.main(ActivityThread.java:7811) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1076)

[growse]

Thanks! Will be in the next release.