Backport rev [17063]. Correctly count childern of a node. The previous code...

Backport rev [17063]. Correctly count childern of a node. The previous code counted the endpoints too, which gave a too high children count.

src/playlist/view.c

@@ -569,17 +569,17 @@ int playlist_NodeChildrenCount( playlist_t *p_playlist, playlist_item_t*p_node)
 {
     int i;
     int i_nb = 0;
+
     if( p_node->i_children == -1 )
     {
         return 0;
     }
 
+    i_nb += p_node->i_children;
     for( i=0 ; i< p_node->i_children;i++ )
     {
         if( p_node->pp_children[i]->i_children == -1 )
-        {
-            i_nb++;
-        }
+            break;
         else
         {
             i_nb += playlist_NodeChildrenCount( p_playlist,