fix bug in user service

internal/database/user.go

@@ -20,7 +20,8 @@ func (s userService) User(id string) (geeksbot.User, error) {
 
 func (s userService) CreateUser(u geeksbot.User) (geeksbot.User, error) {
 	queryString := "INSERT INTO users (id, steam_id, active, staff, admin) VALUES ($1, $2, $3, $4, $5)"
-	_, err := s.db.Exec(queryString, u.ID, u.SteamID, u.IsActive, u.IsStaff, u.IsAdmin)
+	var err error
+	_, err = s.db.Exec(queryString, u.ID, u.SteamID, u.IsActive, u.IsStaff, u.IsAdmin)
 	return u, err
 }
 

user.go

@@ -1,10 +1,8 @@
 package geeksbot
 
-import "database/sql"
-
 type User struct {
 	ID       string
-	SteamID  sql.NullString
+	SteamID  string
 	IsActive bool
 	IsStaff  bool
 	IsAdmin  bool