try fix: corruption

Author: iambibi

src/main/java/fr/openmc/core/features/cube/Cube.java

@@ -235,7 +235,7 @@ public void run() {
 
                     if (isPartOf(new Location(origin.getWorld(), x, y, z))) continue;
 
-                    Location loc = center.add(x, y, z);
+                    Location loc = center.clone().add(x, y, z);
                     Block block = loc.getBlock();
                     Material type = block.getType();