PVS-Studio warning V530 for MTASA

void CreateSphereFaces (
  std::vector < SFace >& faceList, int iIterations )
{
  int numFaces = (int)( pow ( 4.0, iIterations ) * 8 );
  faceList.empty ();
  faceList.reserve ( numFaces );
  ....
}

This suspicious code was found in MTASA project by PVS-Studio static code analyzer.
Warning message is:
V530 The return value of function 'empty' is required to be utilized. cclientcolsphere.cpp 34

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