Hotfix schemSave

Signed-off-by: Chaoscaot <chaoscaot444@gmail.com>

SchematicSystem_Core/src/de/steamwar/schematicsystem/commands/SchematicCommand.java

@@ -144,8 +144,8 @@ public class SchematicCommand extends SWCommand {
         if (invalidSchemName(player, layers)) return;
         SchematicNode currentNode = mkdirs(layers, user, 1);
 
-        SchematicNode node = SchematicNode.getSchematicNode(layers[layers.length - 1], currentNode == null ? 0 : currentNode.getId());
-        if (node != null && !node.getSchemtype().writeable()) {
+        SchematicNode node = SchematicNode.getNodeFromPath(user, String.join("/", layers));
+        if (node != null && !node.getSchemtype().writeable() && node.getOwner() != user.getId()) {
             player.sendMessage(SchematicSystem.PREFIX + "§cDu darfst diese Schematic nicht überschreiben");
             return;
         }