Unexpirable diseases & Holy Symbol patch

Fixed diseases becoming unexpirable after trying to change channels or entering the Cash Shop.
Fixed Holy Symbol acting oddly in solo scenario.
Adjusted Summon Sack lv. 9, that would try to spawn mobs with inexistent id on the field.

src/net/server/channel/handlers/ReactorHitHandler.java

@@ -30,6 +30,7 @@ import tools.data.input.SeekableLittleEndianAccessor;
  * @author Lerk
  */
 public final class ReactorHitHandler extends AbstractMaplePacketHandler {
+    @Override
     public final void handlePacket(SeekableLittleEndianAccessor slea, MapleClient c) {
     	//System.out.println(slea); //To see if there are any differences with packets
         //CD 00 6B 00 00 00 01 00 00 00 03 00 00 00 20 03 F7 03 00 00