Patched Bytes:

0054DA4A  AcceptBattlefieldPort
00522EAD  SetCurrentTitle
0051A7E8  UninviteUnit
005222F9  ReloadUI
0051FF4A  FocusUnit, ClearFocus, ... ?
00527F89  InteractUnit
005191E7  CastSpellByName, CastSpellByID, Movement functions ... ?
0051ACA9  CancelLogout
          AttackTarget (error is still printed)

TODO:
005252E0  TargetDirectionEnemy, TargetDirectionFriend

Function Locations: 
issecurecall: sub_5191C0
SendChatMessage: sub_50D170
SetPartyAssignment+ClearPartyAssignment: sub_52DF40 (?)
SetPartyAssignment: sub_52E1B0
AcceptBattlefieldPort: sub_54DA10

Usage:

./difpatcher -i Wow.exe -p Wow.dif