adaptivetheme_preprocess_maintenance_page indexes NULL $color_file

Problem/Motivation

Warning : Trying to access array offset on value of type null dans adaptivetheme_preprocess_maintenance_page() (ligne 1009 dans (path)/sites/all/themes/contrib/adaptivetheme/at_core/inc/preprocess.inc).

Steps to reproduce

Enable color module, do NOT define color_<theme>_stylesheets. Observe warning.

Proposed resolution

Only enter that check if $color_file is not empty.

Remaining tasks

Validate.

User interface changes

None.

API changes

None.

Data model changes

None.