refactor: No need to fail receive_imf, we can just exit normally

src/reaction.rs

@@ -243,7 +243,7 @@ pub(crate) async fn set_msg_reaction(
     timestamp: i64,
     reaction: Reaction,
     is_incoming_fresh: bool,
-) -> Result<()> {
+) -> Result<bool> {
     if let Some(msg_id) = rfc724_mid_exists(context, in_reply_to).await? {
         set_msg_id_reaction(context, msg_id, chat_id, contact_id, timestamp, &reaction).await?;
 
@@ -258,12 +258,14 @@ pub(crate) async fn set_msg_reaction(
                 reaction,
             });
         }
+        Ok(true)
     } else {
-        bail!(
-            "Can't assign reaction to unknown message with Message-ID {in_reply_to} (SKIP_DEVICE_MSG)"
+        info!(
+            context,
+            "Can't assign reaction to unknown message with Message-ID {}", in_reply_to
         );
+        Ok(false)
     }
-    Ok(())
 }
 
 /// Returns a structure containing all reactions to the message.
@@ -537,7 +539,7 @@ Content-Disposition: reaction\n\
             .as_bytes();
         // Alice receives a reaction to Claire's message from Bob earler than the message itself
         // because Bob knows about Alice's new transport.
-        assert!(receive_imf(alice, reaction_bytes, false).await.is_err());
+        receive_imf(alice, reaction_bytes, false).await?;
 
         let msg_id = receive_imf(
             alice,

src/receive_imf.rs

@@ -2114,7 +2114,7 @@ chat_id=? AND
         if part.is_reaction {
             let reaction_str = simplify::remove_footers(part.msg.as_str());
             let is_incoming_fresh = mime_parser.incoming && !seen;
-            set_msg_reaction(
+            if !set_msg_reaction(
                 context,
                 mime_in_reply_to,
                 chat_id,
@@ -2123,7 +2123,17 @@ chat_id=? AND
                 Reaction::new(reaction_str.as_str()),
                 is_incoming_fresh,
             )
-            .await?;
+            .await?
+            {
+                return Ok(ReceivedMsg {
+                    chat_id,
+                    state,
+                    hidden,
+                    sort_timestamp,
+                    msg_ids: vec![],
+                    needs_delete_job: false,
+                });
+            }
         }
 
         let mut param = part.param.clone();