Change so that it returns a function instead of the password value

Author: silverbullettruck2001

lib/auth_plugins/mysql_clear_password.js

@@ -4,5 +4,9 @@ module.exports = pluginOptions => ({ connection, command }) => {
   const password =
     command.password || pluginOptions.password || connection.config.password;
 
-  return Buffer.from(`${password}\0`)
+  const cleartextPassword = function(password) {
+    return Buffer.from(`${password}\0`)
+  };
+
+  return cleartextPassword(password)
 };