Index: src/Common/NetTopologySuite/LinearReferencing/LinearGeometryBuilder.cs
===================================================================
diff -u -r5fc71a385897af92ccb092f2f969b5709afab85a -r4c09f28891546d714fa6a15d36b70d8a6b9a4aa7
--- src/Common/NetTopologySuite/LinearReferencing/LinearGeometryBuilder.cs	(.../LinearGeometryBuilder.cs)	(revision 5fc71a385897af92ccb092f2f969b5709afab85a)
+++ src/Common/NetTopologySuite/LinearReferencing/LinearGeometryBuilder.cs	(.../LinearGeometryBuilder.cs)	(revision 4c09f28891546d714fa6a15d36b70d8a6b9a4aa7)
@@ -97,13 +97,13 @@
             {
                 line = geomFact.CreateLineString(pts);
             }
-            catch (ArgumentException ex)
+            catch (ArgumentException)
             {
                 // exception is due to too few points in line.
                 // only propagate if not ignoring short lines
                 if (!IgnoreInvalidLines)
                 {
-                    throw ex;
+                    throw;
                 }
             }