Fix up SpellBuff struct

Please report any bugs you find. There shouldn't be unless I messed up the struct
for a client I didn't throughly test for

common/patches/titanium_ops.h

@@ -24,6 +24,7 @@ E(OP_AdventureMerchantSell)
 E(OP_ApplyPoison)
 E(OP_BazaarSearch)
 E(OP_BecomeTrader)
+E(OP_Buff)
 E(OP_ChannelMessage)
 E(OP_CharInventory)
 E(OP_Damage)
@@ -74,6 +75,7 @@ E(OP_ZoneSpawns)
 D(OP_AdventureMerchantSell)
 D(OP_ApplyPoison)
 D(OP_AugmentItem)
+D(OP_Buff)
 D(OP_CastSpell)
 D(OP_ChannelMessage)
 D(OP_CharacterCreate)