Perform clean code of team/bundles/org.eclipse.compare

Author: eclipse-platform-bot

team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardCompare.java

@@ -47,8 +47,8 @@
 
 public class ClipboardCompare extends BaseCompareAction implements IObjectActionDelegate {
 
-	private String clipboard = "Clipboard"; //$NON-NLS-1$
-	private String compareFailed = "Comparision Failed"; //$NON-NLS-1$
+	private final String clipboard = "Clipboard"; //$NON-NLS-1$
+	private final String compareFailed = "Comparision Failed"; //$NON-NLS-1$
 
 	private IWorkbenchPart activePart;