Fixed PHP Warnings: Illegal offset string

Hi,

had a client with this issues:

Warning: Illegal string offset 'SECTION_ID' in
/plugins/redux-framework/ReduxCore/framework.php on line 3057
Warning: Illegal offset string 'id' in
/plugins/redux-framework/ReduxCore/framework.php on line 3081
Header already sent...


1. Redux Version: 3.3.9.4 (as plugin)
2. Wordpress: 4.0.1
3. Dev Mode: No

This is my quick fix for the issue.

Best,
Christian