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/serialize/stream/writer/writer_deflate.rs b/openpgp/src/serialize/stream/writer/writer_deflate.rs
index 92226302..27b4bd6b 100644
--- a/openpgp/src/serialize/stream/writer/writer_deflate.rs
+++ b/openpgp/src/serialize/stream/writer/writer_deflate.rs
@@ -10,6 +10,7 @@ use super::{Generic, Message, BoxStack, Stackable, Cookie};
 pub struct ZIP<'a, C: 'a> {
     inner: Generic<DeflateEncoder<BoxStack<'a, C>>, C>,
 }
+assert_send_and_sync!(ZIP<'_, C>, C);
 
 impl<'a> ZIP<'a, Cookie> {
     /// Makes a ZIP compressing writer.
@@ -78,6 +79,7 @@ impl<'a, C: 'a> Stackable<'a, C> for ZIP<'a, C> {
 pub struct ZLIB<'a, C: 'a> {
     inner: Generic<ZlibEncoder<BoxStack<'a, C>>, C>,
 }
+assert_send_and_sync!(ZLIB<'_, C>, C);
 
 impl<'a> ZLIB<'a, Cookie> {
     /// Makes a ZLIB compressing writer.