referral code N/A if empty

GME Remit/Modules/Profile/ProfileViewController.swift

@@ -91,7 +91,7 @@ class ProfileViewController: UIViewController {
     let referralCode = GMEDB.shared.user.string(.referralCode)
     bankNameLabel.text = bankName
     gmeWalletNumber.text = walletNum
-    referralCodeLabel.text = referralCode
+    referralCodeLabel.text = referralCode == "" ? "N/A".localized() : referralCode
     labelUserProfileName.layer.backgroundColor = UIColor(hex: 0x2e3192).cgColor
     labelUserProfileName.layer.cornerRadius = labelUserProfileName.frame.height / 2
     labelUserProfileName.text = labelUserName?.text?.prefix(1).uppercased()