fix bioebmass arg

src/autobioebbing.py

@@ -329,6 +329,9 @@ async def eb(client, c, conn, con, d, get_id, my_id, message_q):
                 arg = int(arg[1])
             except:
                 await event.edit('Argument should be integer from 1 to 10')
+
+        else:
+            arg = None
         reply = await client.get_messages(event.peer_id, ids=event.reply_to.reply_to_msg_id)
         when = int(datetime.timestamp(event.date))
         t = reply.raw_text