message: Fix incomplete data section
diff: @@ -314,7 +314,7 @@ pub fn read_module<
  base = Some(eval_init_expr(op)?)
  }
  ParserState::DataSectionEntryBodyChunk(chunk) => {
  - data = chunk.to_vec();
  + data.extend_from_slice(chunk);
  }
  ParserState::BeginInitExpressionBody
  | ParserState::EndInitExpressionBody => {}
  