fixed deduplication once again. for real this time I think

src/queries/wanted.rs

@@ -69,6 +69,16 @@ pub async fn update_status(
     Ok(active.update(db).await?)
 }
 
+pub async fn find_by_mbid(
+    db: &DatabaseConnection,
+    musicbrainz_id: &str,
+) -> DbResult<Option<WantedItem>> {
+    Ok(WantedItems::find()
+        .filter(wanted_item::Column::MusicbrainzId.eq(musicbrainz_id))
+        .one(db)
+        .await?)
+}
+
 pub async fn remove(db: &DatabaseConnection, id: i32) -> DbResult<()> {
     WantedItems::delete_by_id(id).exec(db).await?;
     Ok(())