ensure source position for new instance node is tracked

Author: adinn

compiler/src/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/java/NewInstanceNode.java

@@ -88,6 +88,8 @@ public void virtualize(VirtualizerTool tool) {
             }
             tool.createVirtualObject(virtualObject, state, Collections.<MonitorIdNode> emptyList(), false);
             tool.replaceWithVirtual(virtualObject);
+            /* Track the original source node position across the substitution. */
+            virtualObject.setNodeSourcePosition(getNodeSourcePosition());
         }
     }
 }