Fixes #949

impl/src/main/java/io/jsonwebtoken/impl/DefaultJwtParser.java

@@ -637,7 +637,7 @@ private byte[] verifySignature(final TokenizedJwt tokenized, final JwsHeader jws
  // consumable, but not claims, so convert to byte array:
  payloadBytes = Streams.bytes(in, "Unable to convert payload to byte array.");
  }
- } finally {
+ } finally { // always ensure closed per https://github.com/jwtk/jjwt/issues/949
  Objects.nullSafeClose(in);
  }
  }