Bug 852428 part 2. Make nsIFrame::Init infallible. r=dholbert

layout/tables/nsTableCellFrame.cpp

@@ -66,13 +66,13 @@ nsTableCellFrame::GetNextCell() const
   return nullptr;
 }
 
-NS_IMETHODIMP
+void
 nsTableCellFrame::Init(nsIContent*      aContent,
                        nsIFrame*        aParent,
                        nsIFrame*        aPrevInFlow)
 {
   // Let the base class do its initialization
-  nsresult rv = nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
+  nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
 
   if (GetStateBits() & NS_FRAME_FONT_INFLATION_CONTAINER) {
     AddStateBits(NS_FRAME_FONT_INFLATION_FLOW_ROOT);
@@ -85,8 +85,6 @@ nsTableCellFrame::Init(nsIContent*      aContent,
     cellFrame->GetColIndex(colIndex);
     SetColIndex(colIndex);
   }
-
-  return rv;
 }
 
 // nsIPercentHeightObserver methods