fix new clippy error

steel-core/src/chunk/paletted_container.rs

@@ -479,7 +479,7 @@ impl BlockPalette {
             }
             Self::Building(cube) => {
                 let mut count: u16 = 0;
-                for slab in cube.iter() {
+                for slab in cube {
                     for row in slab {
                         for v in row {
                             if v.0 != 0 {

steel-core/src/chunk_saver/format.rs

@@ -221,7 +221,7 @@ impl RegionHeader {
     #[must_use]
     pub fn to_bytes(&self) -> Vec<u8> {
         let mut bytes = Vec::with_capacity(CHUNK_TABLE_SIZE);
-        for entry in self.entries.iter() {
+        for entry in &self.entries {
             bytes.extend_from_slice(&entry.to_bytes());
         }
         bytes

steel-core/src/chunk_saver/storage.rs

@@ -2820,7 +2820,7 @@ impl ChunkStorage {
                     .map(|&idx| Self::resolve_block_state(chunk, idx))
                     .collect();
                 let mut cube = Box::new([[[BlockStateId(0); 16]; 16]; 16]);
-                for plane in cube.iter_mut() {
+                for plane in &mut cube {
                     for row in plane {
                         for cell in row {
                             *cell = runtime_palette[indices.next().expect(