[INVALID] Auto-defend in combat doesn't work if NPC flees

[Xuri]

The NPC appears to not flee far enough for the auto-defend code to switch to a new target, so if you're attacked by more than two NPCs and manage to get one down to low enough health that it starts fleeing, you'll never automatically switch to a new target unless you move further away from the fleeing NPC yourself, or it dies.