From 0b07561e9bf598dda7a13ade2323cbf7f4dc671f Mon Sep 17 00:00:00 2001
From: Zhongwen Deng <zhongwencool@gmail.com>
Date: Thu, 8 Sep 2022 14:26:49 +0800
Subject: [PATCH] fix: ensure authentication is array, not struct

---
 apps/emqx/src/emqx_authentication_config.erl | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/apps/emqx/src/emqx_authentication_config.erl b/apps/emqx/src/emqx_authentication_config.erl
index 681ed1394..b867800ae 100644
--- a/apps/emqx/src/emqx_authentication_config.erl
+++ b/apps/emqx/src/emqx_authentication_config.erl
@@ -64,7 +64,7 @@
 pre_config_update(_, UpdateReq, OldConfig) ->
     try do_pre_config_update(UpdateReq, to_list(OldConfig)) of
         {error, Reason} -> {error, Reason};
-        {ok, NewConfig} -> {ok, return_map(NewConfig)}
+        {ok, NewConfig} -> {ok, NewConfig}
     catch
         throw:Reason ->
             {error, Reason}
@@ -225,9 +225,6 @@ do_check_config(Type, Config, Module) ->
             throw({bad_authenticator_config, #{type => Type, reason => E}})
     end.
 
-return_map([L]) -> L;
-return_map(L) -> L.
-
 to_list(undefined) -> [];
 to_list(M) when M =:= #{} -> [];
 to_list(M) when is_map(M) -> [M];