set font used by git-gutter to match font in rest of window
set font used by git-gutter to match font in rest of window

this prevents modifications from resizing a line's height;
it seems there's a bug where emacs doesn't account for the
line's height changing, because mouse-clicks below a whole
bunch of git-diff changes can be off by one or two lines.

flipk/pfkutils,flipk/pfkutils,flipk/pfkutils,flipk/pfkutils,flipk/pfkutils,flipk/pfkutils,flipk/pfkutils