does not work without undo-tree anymore

[bymoz089]

calling M-x goto-last-change
with version from 2017.december.31 results in:
eval-buffer: Cannot open load file: file or directory not found, undo-tree

[wasamasa]

Thanks for reporting this! I've replaced my previous attempt to silence the byte-compiler with one that doesn't depend on undo-tree being installed.