ChangeLog addition:

2021-09-18  Hauke Fath <hauke@Espresso.Rhein-Neckar.DE>

	* vc.el (vc-exec-after):
	Do not shadow buffer with pointless warning.

	Work around '(error/warning) Error in process sentinel: (error Marker
	does not point anywhere)' which shadows the buffer worked on, see
	http://mid.xemacs.org/18227.9334.796371.434986@mail.delphioutpost.com or
	<http://xemacs-beta.xemacs.narkive.com/khCckwa3/package-maintainers-heads-up>
	Was supposedly fixed upstream, but is not, see
	<http://tracker.xemacs.org/XEmacs/its/issue682>