fix(core/room): use null instead of empty parent

core/room/src/commonMain/kotlin/moe/lava/banksia/core/room/dao/StopDao.kt

@@ -15,7 +15,7 @@ interface StopDao {
     @Query("""
         SELECT * FROM Stop
         WHERE platformCode <> ""
-        AND parent == ""
+        AND parent IS NULL
     """)
     suspend fun getAllParentless(): List<StopEntity>
 

server/src/main/kotlin/moe/lava/banksia/server/GtfsDataFixer.kt

@@ -31,7 +31,7 @@ class GtfsDataFixer(
                 )
                 log("datafixer", "inserting ${parentId} for ${stops.size} children")
                 dao.insertAll(parent)
-                database.stopDao.updateParents(stops.map { it.id }, parentId)
+                dao.updateParents(stops.map { it.id }, parentId)
             }
     }
 }