* lisp/vc/diff-mode.el: Better handle empty lines in context diffs

(diff-end-of-hunk): Obey diff-valid-unified-empty-line for context style.
(diff--refine-hunk): Don't look further than the end.
1 job for master in 59 minutes and 52 seconds (queued for 1 second)
Status Job ID Name Coverage
failed #1122


Name Stage Failure
test-all Test
make[2]: *** [check-doit] Error 1
Makefile:313: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:288: recipe for target 'check-expensive' failed
make[1]: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:962: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1