Hardening

SELECT * FROM gallery2 WHERE topic_id="809323" UNION SELECT * FROM gallery2 WHERE topic_id="199938" UNION SELECT * FROM gallery2 WHERE topic_id="1368534" UNION SELECT * FROM gallery2 WHERE topic_id="1092426" UNION SELECT * FROM gallery2 WHERE topic_id="792087" UNION SELECT * FROM gallery2 WHERE topic_id="1236237" UNION SELECT * FROM gallery2 WHERE topic_id="1297125" UNION SELECT * FROM gallery2 WHERE topic_id="1474213" UNION SELECT * FROM gallery2 WHERE topic_id="1473489" UNION SELECT * FROM gallery2 WHERE topic_id="1308876" UNION SELECT * FROM gallery2 WHERE topic_id="382206" UNION SELECT * FROM gallery2 WHERE topic_id="720311" UNION SELECT * FROM gallery2 WHERE topic_id="278494" UNION SELECT * FROM gallery2 WHERE topic_id="1413654" UNION SELECT * FROM gallery2 WHERE topic_id="234979" UNION SELECT * FROM gallery2 WHERE topic_id="121455"