check in decoder if a sequence section with 0 sequences contains noth…

…ing else

src/decoding/block_decoder.rs

@@ -447,6 +447,9 @@ impl BlockDecoder {
  vprintln!("Executing sequences");
  execute_sequences(workspace)?;
  } else {
+ if !raw.is_empty() {
+ return Err(DecompressBlockError::DecodeSequenceError(DecodeSequenceError::ExtraBits { bits_remaining: raw.len() as isize * 8 }));
+ }
  workspace.buffer.push(&workspace.literals_buffer);
  workspace.sequences.clear();
  }