Simplify error handling during startup

internal/store/store.go

@@ -2,25 +2,27 @@ package store
 
 import (
 	"database/sql"
+	"log"
 
 	_ "github.com/mattn/go-sqlite3"
 )
 
 type Store struct {
-	db *sql.DB
+	db    *sql.DB
+	cakes []Cake
 }
 
-func OpenStore(filename string) (*Store, error) {
+func OpenStore(filename string) *Store {
 	var out Store
 	var err error
 
 	out.db, err = sql.Open("sqlite3", filename)
 	if err != nil {
-		return &out, err
+		log.Fatal("Can't open the database", filename, err)
 	}
 
-	err = out.loadMigrations()
-	return &out, err
+	out.loadMigrations()
+	return &out
 }
 
 func (s *Store) Close() {