Fix crash in ProfileSettings
Fixes the following crash - Open Settings -> Manage Profiles... - Click on a non default profile and edit it - In "Edit Profile Dialog", check "Default" to make this profile default - Click Ok, Now we are back in "Manage Profiles" dialog. - See that "Set as Default" is still clickable, clicking it crashes konsole BUG: 423136 BUG: 445173 BUG: 454986