#82 Fix upgrade handler (state: open)

bug

Assigned to

May 13, 2020 00:53
Description

This is a hotfix. It fixes every migration failing with error:
```
 An exception occurred while executing 'ALTER TABLE mm_test ADD COLUMN downloads__sort blob NULL':  

  SQLSTATE[42S21]: Column already exists: 1060 Duplicate column name 'downloads__sort'   
```
Checklist
- Read and understood the CONTRIBUTING guidelines
- Created tests, if possible
- All tests passing
- Extended the README / documentation, if necessary
- Added myself to the @authors in touched PHP files
- Checked the changes with phpcq and introduced no new issues