window leak in StartscreenActivity

[anlalalu]

Reproduction Steps

1. tap 'upload all'
2. rotate the screen when the dialog exists

Stack Trace

E/WindowManager: android.view.WindowLeaked: Activity org.openbmap.activities.StartscreenActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{529f7488 V.E..... R....... 0,0-729,324} that was originally added here
at android.view.ViewRootImpl.(ViewRootImpl.java:346)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:248)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
at android.app.Dialog.show(Dialog.java:286)
at org.openbmap.activities.StartscreenActivity.showUploadTaskDialog(StartscreenActivity.java:818)
at org.openbmap.activities.StartscreenActivity.uploadAllCommand(StartscreenActivity.java:317)
at org.openbmap.activities.StartscreenActivity.onOptionsItemSelected(StartscreenActivity.java:452)
at android.app.Activity.onMenuItemSelected(Activity.java:2600)
at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:404)
at android.support.v7.app.AppCompatActivity.onMenuItemSelected(AppCompatActivity.java:185)
at android.support.v7.view.WindowCallbackWrapper.onMenuItemSelected(WindowCallbackWrapper.java:100)
at android.support.v7.app.AppCompatDelegateImplV7.onMenuItemSelected(AppCompatDelegateImplV7.java:655)
at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:811)
at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152)
at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:958)
at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:948)
at android.support.v7.widget.ActionMenuView.invokeItem(ActionMenuView.java:618)
at android.support.v7.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:139)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)

Debug info

App Version = 0.8.18

Android Version = 4.4.4

maybe can be solved like this: https://stackoverflow.com/questions/2850573/activity-has-leaked-window-that-was-originally-added