MediaPlayer: Select previous item after item deletion

* Little usability improvement, avoid to select the item each time
in case the user want to delete more than one element.
* Minor cleanup included.

src/apps/mediaplayer/playlist/ListViews.cpp

@@ -722,11 +722,19 @@ DragSortableListView::RemoveSelected()
 {
 	BList indices;
 	GetSelectedItems(indices);
+	int32 index = CurrentSelection()-1;
 
 	DeselectAll();
 
 	if (indices.CountItems() > 0)
 		RemoveItemList(indices);
+
+	if (CountItems() > 0) {
+		if (index < 0)
+			index = 0;
+
+		Select(index);
+	}
 }
 
 // RemoveAll

src/apps/mediaplayer/playlist/PlaylistWindow.cpp

@@ -240,9 +240,11 @@ PlaylistWindow::MessageReceived(BMessage* message)
 		case M_PLAYLIST_RANDOMIZE:
 			fListView->Randomize();
 			break;
+
 		case M_PLAYLIST_REMOVE:
 			fListView->RemoveSelected();
 			break;
+
 		case M_PLAYLIST_MOVE_TO_TRASH:
 		{
 			int32 index;
@@ -252,6 +254,7 @@ PlaylistWindow::MessageReceived(BMessage* message)
 				fListView->RemoveSelectionToTrash();
 			break;
 		}
+
 		default:
 			BWindow::MessageReceived(message);
 			break;