PVS-Studio warning V535 for VTK

FillBlock(....)
{
  ...
  for (vtkIdType i=0; i<p->Dict["NSURF"]; ++i)
  {
    ...
    for (vtkIdType t=0; t<segSz; ++t, ++currentCell)
    {
      ...
      for ( i=0; i<4; ++i )
      { ... }
      ...
    }
    ...
  }
  ...
}

This suspicious code was found in VTK project by PVS-Studio static code analyzer.
Warning message is:
V535 The variable 'i' is being used for this loop and for the outer loop. vtkIO vtklsdynareader.cxx 506

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/