Eliminate the recursive call

crates/flat/src/encode/encoder.rs

@@ -278,6 +278,7 @@ impl Encoder {
     /// After reaching the end of the buffer we write a 0 byte. Only write 0 if the byte array is empty.
     /// This is byte alignment agnostic.
     fn write_blk(&mut self, arr: &[u8], src_ptr: &mut usize) {
+        loop {
             let src_len = arr.len() - *src_ptr;
             let blk_len = src_len.min(255);
 
@@ -290,7 +291,6 @@ impl Encoder {
             self.buffer.extend(&arr[*src_ptr..blk_len]);
 
             *src_ptr += blk_len;
-
-        self.write_blk(arr, src_ptr);
+        }
     }
 }