PVS-Studio warning V547 for Miranda IM

WINUSERAPI
UINT
WINAPI
GetDlgItemInt(
    __in HWND hDlg,
    __in int nIDDlgItem,
    __out_opt BOOL *lpTranslated,
    __in BOOL bSigned);

#define SRMSGSET_LIMITNAMESLEN_MIN 0

static INT_PTR CALLBACK DlgProcTabsOptions(....)
{
  ...
  limitLength =
    GetDlgItemInt(hwndDlg, IDC_LIMITNAMESLEN, NULL, TRUE) >=
    SRMSGSET_LIMITNAMESLEN_MIN ?
    GetDlgItemInt(hwndDlg, IDC_LIMITNAMESLEN, NULL, TRUE) :
    SRMSGSET_LIMITNAMESLEN_MIN;
  ...
}

This suspicious code was found in Miranda IM project by PVS-Studio static code analyzer.
Warning message is:
V547 Expression is always true. Unsigned type value is always >= 0. scriver msgoptions.c 458

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/