Fix redundant_closure

src/models/database.rs

@@ -199,7 +199,7 @@ impl Database {
                             discriminator: row.get(1)?,
                             avatar: row.get(2)?,
                         }))
-                    }).map_err(|error| DatabaseError::Rusqlite(error)),
+                    }).map_err(DatabaseError::Rusqlite),
                     Err(error) => Err(DatabaseError::Rusqlite(error)),
                 }
             })