OO-2052: remove group memberships first to prevent timing issue with the...

OO-2052: remove group memberships first to prevent timing issue with the asynchronous removing of subscription (patch S. Clemenz)

src/main/java/org/olat/group/ui/main/AbstractMemberListController.java

@@ -605,8 +605,8 @@ public abstract class AbstractMemberListController extends FormBasicController i
 	protected void doLeave(List<Identity> members, boolean sendMail) {
 		MailPackage mailing = new MailPackage(sendMail);
 		if(repoEntry != null) {
-			repositoryManager.removeMembers(getIdentity(), members, repoEntry, mailing);
 			businessGroupService.removeMembers(getIdentity(), members, repoEntry.getOlatResource(), mailing);
+			repositoryManager.removeMembers(getIdentity(), members, repoEntry, mailing);
 		} else {
 			businessGroupService.removeMembers(getIdentity(), members, businessGroup.getResource(), mailing);
 		}