Fix NullPointerException in UserController.forceStopUser

Fixes: 326430999
Test: atest ResetPasswordWithTokenTest#setPasswordMinimumSymbols_one_passwordWithAtLeastOneSymbolRequired
Test: atest DeviceManagementCoexistenceTest#addUserRestrictionGlobally_serialisation_loadsPolicy
Flag: None
Change-Id: I4be5959fa6b81598ca55882e9e392500ca0d3974
1 file changed