Fix analyzer

lib/views/chat_details.dart

@@ -203,11 +203,8 @@ class _ChatDetailsState extends State<ChatDetails> {
               ],
               title: Text(widget.room.getLocalizedDisplayname(context),
                   style: TextStyle(
-                      color: Theme.of(context)
-                          .appBarTheme
-                          .textTheme
-                          .headline6
-                          .color)),
+                      color:
+                          Theme.of(context).appBarTheme.textTheme.title.color)),
               backgroundColor: Theme.of(context).appBarTheme.color,
               flexibleSpace: FlexibleSpaceBar(
                 background: ContentBanner(widget.room.avatar,

lib/views/settings.dart

@@ -117,11 +117,7 @@ class _SettingsState extends State<Settings> {
               title: Text(
                 I18n.of(context).settings,
                 style: TextStyle(
-                    color: Theme.of(context)
-                        .appBarTheme
-                        .textTheme
-                        .headline6
-                        .color),
+                    color: Theme.of(context).appBarTheme.textTheme.title.color),
               ),
               background: ContentBanner(
                 profile?.avatarUrl ?? MxContent(""),