Add hash to scramed password stored in mnesia by earlier version

src/ejabberd_auth_mnesia.erl

@@ -180,6 +180,9 @@ count_users(Server, _) ->
 
 get_password(User, Server) ->
     case mnesia:dirty_read(passwd, {User, Server}) of
+	[#passwd{password = {scram, SK, SEK, Salt, IC}}] ->
+	    {cache, {ok, #scram{storedkey = SK, serverkey = SEK,
+				salt = Salt, hash = sha, iterationcount = IC}}};
 	[#passwd{password = Password}] ->
 	    {cache, {ok, Password}};
 	_ ->