nsIFrame* prevInFlow; aReflowState.frame->GetPrevInFlow(&prevInFlow);
nsIFrame* prevInFlow = aReflowState.frame->GetPrevInFlow();
nsTableFrame::CheckRequestSpecialHeightReflow(const nsHTMLReflowState& aReflowState){  if (!aReflowState.frame) ABORT0();  nsIFrame* prevInFlow;  aReflowState.frame->GetPrevInFlow(&prevInFlow);  if (!prevInFlow                                             &&   // 1st in flow                                            && // 1st in flow      ((NS_UNCONSTRAINEDSIZE == aReflowState.mComputedHeight) ||   // no computed height       (0                    == aReflowState.mComputedHeight))  &&       ::IsPctStyleHeight(aReflowState.mStylePosition)) {           // pct height    if (::AncestorsHaveStyleHeight(aReflowState)) {      nsTableFrame::RequestSpecialHeightReflow(aReflowState);    }  }}