Bug 654017 Unused variable 'rightEdge' r=dholbert

layout/xul/base/src/tree/src/nsTreeBodyFrame.cpp

@@ -3527,7 +3527,6 @@ nsTreeBodyFrame::PaintText(PRInt32              aRowIndex,
   NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
 
   PRBool isRTL = GetStyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
-  nscoord rightEdge = aTextRect.XMost();
 
   // Now obtain the text for our cell.
   nsAutoString text;