Make inner class Match static in AbstractMatching

This avoids the pointer to the outer class and save a tiny bit of
memory. Done via JDT cleanup actions

Change-Id: Iccc9b7a6e5effaf1d8959f34d4a9b58d27402e68
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
diff --git a/examples/org.eclipse.compare.examples.xml/src/org/eclipse/compare/examples/xml/AbstractMatching.java b/examples/org.eclipse.compare.examples.xml/src/org/eclipse/compare/examples/xml/AbstractMatching.java
index 41e1922..82057fc 100644
--- a/examples/org.eclipse.compare.examples.xml/src/org/eclipse/compare/examples/xml/AbstractMatching.java
+++ b/examples/org.eclipse.compare.examples.xml/src/org/eclipse/compare/examples/xml/AbstractMatching.java
@@ -160,7 +160,7 @@
 	}
 
 	/* represents a matching between a node in the Left tree and a node in the Right tree */
-	class Match {
+	static class Match {
 		public XMLNode fx;
 		public XMLNode fy;