Don't show error when changing expiration is successful
Review Request #113032 - Created Oct. 1, 2013 and submitted
When changing expiration date, an error dialog is always shown, even when the change is successful. This is because the KGpgKeyTransaction sets initially result to TS_MSG_SEQUENCE, but it does not set it to TS_OK when gpg returns GOT_IT (success).
Changed expiration day of a key without getting an error.