PVS-Studio warning V501 for MTASA

bool CVehicleUpgrades::IsUpgradeCompatible (
  unsigned short usUpgrade )
{
  ....
  case 402: return ( us == 1009 || us == 1009 || us == 1010 );
  ....
}

This suspicious code was found in MTASA project by PVS-Studio static code analyzer.
Warning message is:
V501 There are identical sub-expressions to the left and to the right of the '||' operator: us == 1009 || us == 1009 cvehicleupgrades.cpp 84

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/