Remove Pepper_Potion
It is obsolete in HideousDestructor's master branch; a recent commit there has made healing potions into HDWeapon instead of HDPickup, obsoleting Pepper_Potion.
It also caused the game to fail to load due to this incongruency. (Might be worth checking instances where a review might be due, where an incongruency simply hasn't been noticed due to a lack of errors or bugs?)
If it is desired that the master branch maintains compatibility with HDest's latest stable release, I would recommend keeping a separate branch for compatibility with the bleeding edge commit of HDest ('edge'), and maybe one for ongoing development as well ('develop').