account_edit_processing.php: fix undefined index
account_edit_processing.php: fix undefined index

The radio buttons for `choise` do not have a default, so only
query it from `$_POST` if it exists.

Similarly, the `suspicion` text box is empty, but still queried
if a non-multi closing reason is given.

hemberger/smr,smrealms/smr,smrealms/smr,hemberger/smr,smrealms/smr,hemberger/smr,hemberger/smr