Minor fix wrt #1628

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/databind/ext/OptionalHandlerFactory.java

@@ -1,5 +1,8 @@
 package com.fasterxml.jackson.databind.ext;
 
+import java.util.logging.Logger;
+import java.util.logging.Level;
+
 import com.fasterxml.jackson.databind.*;
 import com.fasterxml.jackson.databind.deser.Deserializers;
 import com.fasterxml.jackson.databind.ser.Serializers;
@@ -49,7 +52,8 @@ public class OptionalHandlerFactory implements java.io.Serializable
             doc = org.w3c.dom.Document.class;
         } catch (Exception e) {
             // not optimal but will do
-            System.err.println("WARNING: could not load DOM Node and/or Document classes");
+            Logger.getLogger(OptionalHandlerFactory.class.getName())
+                .log(Level.INFO, "Could not load DOM `Node` and/or `Document` classes: no DOM support");
         }
         CLASS_DOM_NODE = node;
         CLASS_DOM_DOCUMENT = doc;