Log spam from /enchant addall

[ChargedCreeper]

This resulted from someone using enchant addall on an empty slot... from just 1 command. Fortunately they did not spam it, but this has potential as a means of spamming the logs very quickly.

:[14:27:49 INFO]: [PREPROCESS_COMMAND] steve3344(steve3344): /enchant addall
:[14:27:49 INFO]: [TotalFreedomMod] Error using DURABILITY on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using PROTECTION_ENVIRONMENTAL on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using LOOT_BONUS_BLOCKS on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using PROTECTION_FIRE on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using DIG_SPEED on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using PROTECTION_FALL on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using SILK_TOUCH on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using PROTECTION_EXPLOSIONS on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using PROTECTION_PROJECTILE on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using OXYGEN on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using WATER_WORKER on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using THORNS on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using ARROW_INFINITE on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using DAMAGE_UNDEAD on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using ARROW_FIRE on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using DAMAGE_ALL on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using ARROW_KNOCKBACK on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using KNOCKBACK on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using ARROW_DAMAGE on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using DAMAGE_ARTHROPODS on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using LOOT_BONUS_MOBS on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using FIRE_ASPECT on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using LURE on AIR held by steve3344.
:[14:27:49 INFO]: [TotalFreedomMod] Error using LUCK on AIR held by steve3344.

[JeromSar]

./enchant should probably be blocked if the player has no item in hand. Thanks @Windows-i7