Do not use new DefaultScope.

Prefer the INSTANCE field.

Change-Id: I8da37f607347eed398a14e11d75a7706be5cc7b5
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/runtime/PreferenceStatsView.java b/bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/runtime/PreferenceStatsView.java
index fab3890..b10852f 100644
--- a/bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/runtime/PreferenceStatsView.java
+++ b/bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/runtime/PreferenceStatsView.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2012 IBM Corporation and others.
+ * Copyright (c) 2004, 2018 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -149,7 +149,7 @@
 
 			// Properties defaults
 			count += 4;
-			node = new DefaultScope().getNode(pluginID);
+			node = DefaultScope.INSTANCE.getNode(pluginID);
 			if (node != null) {
 				// add the key/value pairs
 				// TODO rough estimate