Tighten development sync SQL temp permissions

Author: jessuppi

bash/ss-sync-development.txt

@@ -104,7 +104,7 @@ fi
 ## import database ##
 ss_cp /var/www/backups/mysql/production.sql "${TMP_DEVELOPMENT_SYNC_SQL}"
 chown mysql:mysql "${TMP_DEVELOPMENT_SYNC_SQL}" ## does not matter if -L flag used below
-chmod 0644 "${TMP_DEVELOPMENT_SYNC_SQL}" ## does not matter if -L flag used below
+chmod 0640 "${TMP_DEVELOPMENT_SYNC_SQL}" ## must be 0640
 ss_mysql_user development < "${TMP_DEVELOPMENT_SYNC_SQL}"
 
 ## fix development home and siteurl fields (no mass search/replace to avoid potential conflicts) ##