Fix NullReferenceException in SettingsPage+<btnSave_Clicked>c__async0.MoveNext

[aditmer]

Version: 1.0 (1) | com.nightscout.nightscoutmobilehybrid

Stacktrace

0 NightscoutMobileHybrid SettingsPage+c__async0 MoveNext 1 System.Runtime.ExceptionServices ExceptionDispatchInfo Throw 2 System.Runtime.CompilerServices AsyncMethodBuilderCore m__0 3 Android.App SyncContext+c__AnonStorey0 <>m__0 4 Java.Lang Thread+RunnableImplementor Run 5 Java.Lang IRunnableInvoker n_Run 6 mono.java.lang RunnableImplementor n_run 7 mono.java.lang RunnableImplementor run 8 android.os Handler handleCallback 9 android.os Handler dispatchMessage 10 android.os Looper loop 11 android.app ActivityThread main 12 java.lang.reflect Method invokeNative 13 java.lang.reflect Method invoke 14 com.android.internal.os ZygoteInit$MethodAndArgsCaller run 15 com.android.internal.os ZygoteInit main 16 dalvik.system NativeStart main Java.Lang.Thread 2 

Reason

android.runtime.JavaProxyThrowable: System.NullReferenceException: Object reference not set to an instance of an object

Link to HockeyApp

• https://rink.hockeyapp.net/manage/apps/420648/crash_reasons/152683142