Package nil has no homepage

[Amorymeltzer]

When called interactively, paradox-menu-visit-homepage doesn't define pkg, just url, so packages without a homepage return "Package nil has no homepage."

paradox/paradox-menu.el

Lines 808 to 813 in 1b9e4b1

	(let ((url (paradox--package-homepage
	(paradox--get-or-return-package pkg))))
	(if (stringp url)
	(browse-url url)
	(message "Package %s has no homepage."
	(propertize (symbol-name pkg)

[Amorymeltzer]

Closing in favor of #176 and #180, which seem to be related, if not exactly the same issue