scratch/package-vc-fixes 3c74b9b197 3/3: Raise 'wrong-type-argument' when installing package nil

[Philip Kaludercic]

branch: scratch/package-vc-fixes
commit 3c74b9b197642ca605ee382e755c628dcfbd15ca
Author: Philip Kaludercic <philipk@posteo.net>
Commit: Philip Kaludercic <philipk@posteo.net>

    Raise 'wrong-type-argument' when installing package nil
    
    * lisp/emacs-lisp/package-vc.el (package-vc-install): Check if the
    package is nil.
---
 lisp/emacs-lisp/package-vc.el | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lisp/emacs-lisp/package-vc.el b/lisp/emacs-lisp/package-vc.el
index 8dabd42771..750847f46e 100644
--- a/lisp/emacs-lisp/package-vc.el
+++ b/lisp/emacs-lisp/package-vc.el
@@ -632,6 +632,8 @@ uses `package-vc-heuristic-alist' to guess the backend."
              (and current-prefix-arg :last-release)))))
   (package-vc--archives-initialize)
   (cond
+   ((null name-or-url)
+    (signal 'wrong-type-argument nil))
    ((and-let* (((stringp name-or-url))
                (backend (or backend (package-vc--guess-backend name-or-url))))
       (package-vc--unpack