Free variable after use

src/freedombone-utils-gnusocialtools

     # Ensure that the database password is correct
     MARIADB_PASSWORD=$(${PROJECT_NAME}-pass -u root -a mariadb)
     sed -i "s|\$config['db']['database'].*|\$config['db']['database'] = 'mysqli://root:${MARIADB_PASSWORD}@localhost/${gnusocial_variant}';|g" config.php
+    MARIADB_PASSWORD=
 
     # Set permissions
     chmod g+w /var/www/$gnusocial_domain/htdocs