PVS-Studio warning V573 for MTASA

Vector2 Window::windowToScreen(const UVector2& vec) const
{
  Vector2 base = d_parent ?
    d_parent->windowToScreen(base) + getAbsolutePosition() :
    getAbsolutePosition();
  ....
}

This suspicious code was found in MTASA project by PVS-Studio static code analyzer.
Warning message is:
V573 Uninitialized variable 'base' was used. The variable was used to initialize itself. ceguiwindow.cpp 1858

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