oops forgot to do this

migrations/2023-09-03-032651_levels/up.sql

@@ -25,7 +25,7 @@ CREATE TABLE levels (
     song_id  INTEGER  NOT NULL,
 
     length      INTEGER  NOT NULL,
-    length_real INTEGER  NOT NULL,
+    length_real DOUBLE PRECISION    NOT NULL,
     objects     INTEGER  NOT NULL,
     coins       INTEGER  NOT NULL  DEFAULT 0,
     has_ldm     INTEGER  NOT NULL  DEFAULT 0,

src/db/schema.rs

@@ -46,7 +46,7 @@ diesel::table! {
         editor_time_copies -> Int4,
         song_id -> Int4,
         length -> Int4,
-        length_real -> Int4,
+        length_real -> Float8,
         objects -> Int4,
         coins -> Int4,
         has_ldm -> Int4,