PVS-Studio warning V547 for WinMerge

typedef String std::wstring;

void CSplashWnd::OnPaint()
{
  ...
  String text = LoadResString(IDS_SPLASH_DEVELOPERS);

  // avoid dereference of empty strings and
  // the NULL termiated character
  if (text.length() >= 0)
  {
  ...
}

This suspicious code was found in WinMerge project by PVS-Studio static code analyzer.
Warning message is:
V547 Expression 'text.length() >= 0' is always true. Unsigned type value is always >= 0. Merge splash.cpp 262

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