PVS-Studio warning V523 for ReactOS

static void TAB_SetupScrolling(
  TAB_INFO*   infoPtr,
  const RECT* clientRect)
{
  ....
  /*
  * Calculate the position of the scroll control.
  */
  if(infoPtr->dwStyle & TCS_VERTICAL)
  {
    controlPos.right = clientRect->right;
    controlPos.left  = controlPos.right -
                       2 * GetSystemMetrics(SM_CXHSCROLL);

    if (infoPtr->dwStyle & TCS_BOTTOM)
    {
      controlPos.top    = clientRect->bottom -
                          infoPtr->tabHeight;
      controlPos.bottom = controlPos.top +
                          GetSystemMetrics(SM_CYHSCROLL);
    }
    else
    {
      controlPos.bottom = clientRect->top + infoPtr->tabHeight;
      controlPos.top    = controlPos.bottom -
                          GetSystemMetrics(SM_CYHSCROLL);
    }
  }
  else
  {
    controlPos.right = clientRect->right;
    controlPos.left  = controlPos.right -
                       2 * GetSystemMetrics(SM_CXHSCROLL);

    if (infoPtr->dwStyle & TCS_BOTTOM)
    {
      controlPos.top    = clientRect->bottom -
                          infoPtr->tabHeight;
      controlPos.bottom = controlPos.top +
                          GetSystemMetrics(SM_CYHSCROLL);
    }
    else
    {
      controlPos.bottom = clientRect->top + infoPtr->tabHeight;
      controlPos.top    = controlPos.bottom -
                          GetSystemMetrics(SM_CYHSCROLL);
    }
  }
  ....
}

This suspicious code was found in ReactOS project by PVS-Studio static code analyzer.
Warning message is:
V523 The 'then' statement is equivalent to the 'else' statement. tab.c 1043

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