Fixed missing lower() in waifu/husbando insert

nxy/plugins/useless.py

@@ -111,7 +111,7 @@ class Useless(DatabasePlugin):
                 insert into
                   users (nick, waifu)
                 values
-                  (%s, %s)
+                  (lower(%s), %s)
                 on conflict (nick) do update set
                   waifu = excluded.waifu
                 ''', [mask.nick, waifu])
@@ -148,17 +148,21 @@ class Useless(DatabasePlugin):
         if nick.startswith('='):
             nick = nick[1:]
 
+            try:
                 self.cur.execute('''
                 insert into
                   users (nick, husbando)
                 values
-              (%s, %s)
+                  (lower(%s), %s)
                 on conflict (nick) do update set
                   husbando = excluded.husbando
                 ''', [mask.nick, nick])
 
                 self.bot.notice(mask.nick, 'Husbando set to: {husbando}'
                                 .format(husbando=nick))
+            except Error:
+                print(ex)
+                self.con.rollback()
         else:
             self.cur.execute('''
             select