add istanbul exclusions

src/routes/generateToken.ts

@@ -23,6 +23,7 @@ export async function generateTokenRequest(req: GenerateTokenRequest, res: Respo
     if (type === TokenType.patreon || (type === TokenType.local && adminUserID === config.adminUserID)) {
         const licenseKey = await createAndSaveToken(type, code);
 
+        /* istanbul ignore else */
         if (licenseKey) {
             return res.status(200).send(`
                 <h1>