fixed no response error in reddit img module

reddit.py

@@ -75,4 +75,10 @@ def reddit_img(bot, update, args):
         update.message.reply_text("Geile, sag sub")
         return
     sub = args[0]
-    bot.send_photo(chat_id=update.message.chat_id, photo=get_reddit_post(sub, True))
+    post = get_reddit_post(sub, True)
+
+    try:
+        bot.send_photo(chat_id=update.message.chat_id, photo=post.url)
+        return
+    except AttributeError:
+        update.message.reply_text(post)