bug#25885: 26.0.50; yas-minor-mode fails to load with xml files

[npostavs]

Mohammed Sadiq <sadiq@sadiqpk.org> writes:
>
> Here is the output in debugger when I opened emacs:
> Debugger entered--Lisp error: (invalid-function with-coding-priority)
>   with-coding-priority((utf-8) undecided)
>   xml-find-file-coding-system((insert-file-contents "/home/sadiq/test.xml" t 
> nil nil nil))
>   insert-file-contents("~/test.xml" t)

It looks like `xml-find-file-coding-system' was miscompiled,
`with-coding-priority' is supposed to be a macro.  Can you see if 'make
bootstrap' fixes it?