PVS-Studio warning V519 for ReactOS

static void
DIB_32BPP_BitBlt_SRCCOPY(PBLTINFO BltInfo)
{
  ...
  CenterCount = BltInfo->DestRect.right -
                BltInfo->DestRect.left;
  CenterCount = 4 * (BltInfo->DestRect.right -
                      BltInfo->DestRect.left);
  ...
}

This suspicious code was found in ReactOS project by PVS-Studio static code analyzer.
Warning message is:
V519 The 'CenterCount' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 4125, 4126. win32k dib32gen.c 4126

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/