PVS-Studio warning V560 for OpenMW

enum UpperBodyCharacterState
{
  UpperCharState_Nothing,
  UpperCharState_EquipingWeap,
  UpperCharState_UnEquipingWeap,
  ....
};

bool CharacterController::updateWeaponState()
{
  ....
  if((weaptype != WeapType_None ||
      UpperCharState_UnEquipingWeap) && animPlaying)
  ....
}

This suspicious code was found in OpenMW project by PVS-Studio static code analyzer.
Warning message is:
V560 A part of conditional expression is always true: UpperCharState_UnEquipingWeap. openmw character.cpp 949

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/