[dev] Small fix to the dmenu XFT pull request.

After spending about an hour today trying to figure out why my old dmenu
config wasn't working properly (it was ignoring the value of -sf) I finally
tracked the problem back to the dmenu XFT pull request. A little googling turned up
that this was either a "known bug", or a "feature" depending on how one
chooses to interpret the comment in the discord server. After some discussion
in the #suckmore Telegram channel in which it was implied that -sf was removed
because "that's the way xft works" and that it was impossible to have
foreground highlighting while using XFT I decided to take a sspace at fixing
the pull request to not break -sf. Attached you will find a minor alteration to the
existing xft pull request that does in fact re-enable -sf support (although not
very nicely, someone feel free to write a better version). I'm sure there'a
 better way to have implemented this, but it works and I haven't noticed any
real differences between my version and the previous pull request besides the fact
that it now once again honors the setting of -sf.

-R. Kyle Murphy

--
Curiosity was framed, Ignorance killed the cat.