#671 - Remove list creation in ResourceSupport.getLink().

Since `ResourceSupport` has direct access to the list of links, no need to build up an intermedia `List` and then filter on it. Simply filter on the internal list of links. Also did some minor polishing.

Author: izeye

src/main/java/org/springframework/hateoas/ResourceSupport.java

@@ -32,6 +32,7 @@
  * Base class for DTOs to collect links.
  * 
  * @author Oliver Gierke
+ * @author Johhny Lim
  */
 public class ResourceSupport implements Identifiable<Link> {
 
@@ -123,7 +124,10 @@ public void removeLinks() {
 	 * @return the link with the given rel or {@link Optional#empty()} if none found.
 	 */
 	public Optional<Link> getLink(String rel) {
-		return getLinks(rel).stream().findFirst();
+
+		return links.stream() //
+				.filter(link -> link.getRel().equals(rel)) //
+				.findFirst();
 	}
 
 	/**