Fix #1274 : because the id is cloned too, multiple DLNAResources had …

…the same

ID, and when the user clicked on the second element of the list, it is resolved to the first one (the first element
is the original file, the second is the file without subtitle), this is commited in r1001

src/main/java/net/pms/dlna/DLNAResource.java

@@ -555,6 +555,7 @@ public void addChild(DLNAResource child) {
 								VirtualFolder fileFolder = new FileTranscodeVirtualFolder(child.getName(), null);
 
 								DLNAResource newChild = (DLNAResource) child.clone();
+								newChild.setId(null);
 								newChild.setPlayer(pl);
 								newChild.setMedia(child.getMedia());
 								// newChild.original = child;