Fix broken LISTGROUP

lib/nntp/tiny/session.py

@@ -262,7 +262,7 @@ class Session():
             sql += " and " + msgrange.where()
 
         summary = self._newsgroup_summary(newsgroup)
-        cr      = self.db.execute(sql, (newsgroup.id))
+        cr      = self.db.execute(sql, (newsgroup.id,))
 
         text = "%d %d %d %s" % (
             summary['count'],
@@ -273,8 +273,13 @@ class Session():
 
         self.respond(ResponseCode.NNTP_GROUP_LISTING, text)
 
-        for message in cr.each():
-            self.print(str(message.id))
+        while True:
+            row = cr.fetchone()
+
+            if row is None:
+                break
+
+            self.print(str(row[0]))
 
         return self.end()