Add missing break

It does not really matter functionally, but it looked bad,

Change-Id: Icb5b73b38fcaa19f7d1c5a0235c3e8dd125b888b

org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheCheckout.java

@@ -627,6 +627,7 @@ public class DirCacheCheckout {
 					keep(dce); // 5 6
 				else
 					conflict(name, dce, h, m); // 5b 6b
+				break;
 			case 0xFDD: // 10 11
 				// TODO: make use of tree extension as soon as available in jgit
 				// we would like to do something like