Index: src/Common/NetTopologySuite/Operation/Overlay/Snap/SnapIfNeededOverlayOp.cs
===================================================================
diff -u -r8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9 -rb952cbf07300e448057ccfa97ea3c97e21291fb3
--- src/Common/NetTopologySuite/Operation/Overlay/Snap/SnapIfNeededOverlayOp.cs	(.../SnapIfNeededOverlayOp.cs)	(revision 8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9)
+++ src/Common/NetTopologySuite/Operation/Overlay/Snap/SnapIfNeededOverlayOp.cs	(.../SnapIfNeededOverlayOp.cs)	(revision b952cbf07300e448057ccfa97ea3c97e21291fb3)
@@ -57,7 +57,7 @@
             try
             {
                 result = OverlayOp.Overlay(geom[0], geom[1], opCode);
-                var isValid = true;
+                //var isValid = true;
                 // not needed if noding validation is used
                 //      boolean isValid = OverlayResultValidator.isValid(geom[0], geom[1], OverlayOp.INTERSECTION, result);
                 // if (isValid)