Fix panic deserializing RawValue from invalid utf-8 bytes

Author: dtolnay

src/read.rs

@@ -587,7 +587,10 @@ impl<'a> Read<'a> for SliceRead<'a> {
  V: Visitor<'a>,
  {
  let raw = &self.slice[self.raw_buffering_start_index..self.index];
- let raw = str::from_utf8(raw).unwrap();
+ let raw = match str::from_utf8(raw) {
+ Ok(raw) => raw,
+ Err(_) => return error(self, ErrorCode::InvalidUnicodeCodePoint),
+ };
  visitor.visit_map(BorrowedRawDeserializer {
  raw_value: Some(raw),
  })