Fix Member Groups for EE6

[dougblackjr]

EE6 moved from Member Groups to Roles and Permissions:

Looking at this line:

Stash/system/user/addons/stash/upd.stash.php

Line 114 in fbf177d

ee()->db->delete('module_member_groups', array('module_id' => $query->row('module_id')));

This will break when uninstalling in EE6. Changing this to exp_module_member_roles will make it EE6 ready.

Happy to PR this with a version check; just would need to know how you would want to go about that, so it can check whether it would be EE5 or EE6 (i.e. an add-on version check? Checking EE's APP_VER constant?)

[croxton]

Yes please go ahead and make a PR. You can use APP_VER to determine which EE version is in use, e.g.:

if (version_compare(APP_VER, '6.0', '>=')) {
   ee()->db->delete('module_member_roles', array('module_id' => $query->row('module_id')));
} else {
   ee()->db->delete('module_member_groups', array('module_id' => $query->row('module_id'))); 
}