NPE when saving instance state of ForumActivity
Immediately after the crash documented in #527 (closed), another crash occurred without any user interaction.
07-27 12:32:21.664 15493-15493/? E/ACRA: ACRA caught a RuntimeException for org.briarproject
java.lang.RuntimeException: Unable to pause activity {org.briarproject/org.briarproject.android.forum.ForumActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2731)
at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2678)
at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:2651)
at android.app.ActivityThread.access$1700(ActivityThread.java:132)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1045)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:143)
at android.app.ActivityThread.main(ActivityThread.java:4268)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at org.briarproject.android.forum.ForumActivity$ForumAdapter.access$100(ForumActivity.java:371)
at org.briarproject.android.forum.ForumActivity.onSaveInstanceState(ForumActivity.java:157)
at android.app.Activity.performSaveInstanceState(Activity.java:1088)
at android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:1317)
at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2703)
at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2678)
at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:2651)
at android.app.ActivityThread.access$1700(ActivityThread.java:132)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1045)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:143)
at android.app.ActivityThread.main(ActivityThread.java:4268)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)