Fix showing owner info creation from UserTile if no owner is set

* Turns out the default user will always be present, meaning a check of
  user count == 0 fails.

Change-Id: Id8e8e75c5f51c73a60d7b9039298ecb90e572bc9

Conflicts:

	packages/SystemUI/src/com/android/systemui/quicksettings/UserTile.java