Subject: bug#33684: DocView bombs out upon password protected PDFs

From: 積丹尼 Dan Jacobson <[email-masked]>
Date: Sun, 09 Dec 2018 18:52:50 +0800

When trying to view a password protected PDF:
DocView: process pdf/ps->png changed status to exited abnormally with code 1.
Maybe it should ask for the password.
emacs-version "25.2.2"