openpgp: Add assert_send_and_sync! for more types.

- All types that are `Send` and `Sync` are checked now.

- Fixes #627.

1 files changed, 2 insertions, 0 deletions

diff --git a/openpgp/src/message/lexer.rs b/openpgp/src/message/lexer.rs
index 623dc05d..e1ac7194 100644
--- a/openpgp/src/message/lexer.rs
+++ b/openpgp/src/message/lexer.rs
@@ -42,6 +42,7 @@ pub enum Token {
     /// A container's unparsed content.
     OpaqueContent,
 }
+assert_send_and_sync!(Token);
 
 impl fmt::Display for Token {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
@@ -53,6 +54,7 @@ impl fmt::Display for Token {
 pub enum LexicalError {
     // There are no lexing errors.
 }
+assert_send_and_sync!(LexicalError);
 
 impl fmt::Display for LexicalError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {