Tidying

src/freedombone-utils-database

     if [ -f $DATABASE_PASSWORD_FILE ]; then
         MARIADB_PASSWORD=$(cat $DATABASE_PASSWORD_FILE)
         ${PROJECT_NAME}-pass -u root -a mariadb -p "$MARIADB_PASSWORD"
-        if [[ "$(${PROJECT_NAME}-pass -u root -a mariadb)" == "$MARIADB_PASSWORD" ]]; then
+        stored_password=$(${PROJECT_NAME}-pass -u root -a mariadb)
+        if [[ "$stored_password" == "$MARIADB_PASSWORD" ]]; then
             shred -zu $DATABASE_PASSWORD_FILE
             echo $'MariaDB password moved into password store'
             return