PVS-Studio warning V502 for Chromium

static const int kClientEdgeThickness;

int height() const;

bool ShouldShowClientEdge() const;

void CustomFrameView::PaintMaximizedFrameBorder(
  gfx::Canvas* canvas)
{
  ...
  int edge_height = titlebar_bottom->height() -
    ShouldShowClientEdge() ? kClientEdgeThickness : 0;
  ...
}

This suspicious code was found in Chromium project by PVS-Studio static code analyzer.
Warning message is:
V502 Perhaps the '?:' operator works in a different way than it was expected. The '?:' operator has a lower priority than the '-' operator.  views  custom_frame_view.cc  400

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