add Message.parent() (Message.quoted_messages requires a text)

src/message.rs

@@ -800,6 +800,12 @@ impl Message {
 
     pub async fn quoted_message(&self, context: &Context) -> Result<Option<Message>> {
         if self.param.get(Param::Quote).is_some() && !self.is_forwarded() {
+            return self.parent(context).await;
+        }
+        Ok(None)
+    }
+
+    pub(crate) async fn parent(&self, context: &Context) -> Result<Option<Message>> {
         if let Some(in_reply_to) = &self.in_reply_to {
             if let Some(msg_id) = rfc724_mid_exists(context, in_reply_to).await? {
                 let msg = Message::load_from_db(context, msg_id).await?;
@@ -811,7 +817,6 @@ impl Message {
                 };
             }
         }
-        }
         Ok(None)
     }