Warn if ctl is not a fifo
Warn if ctl is not a fifo

Ordinary files are not supported and cause problems, so close the fd and
print a warning instead. Thanks to Sergey Bronnikov for the initial
patch.

johnso51/pianobar,DavidZemon/pianobar,johnso51/pianobar,tchajed/pianobar,gnowxilef/pianobar,twahlfeld/pianobar,tchajed/pianobar,johnso51/pianobar,johndeeney/pianobar,DavidZemon/pianobar,bmbove/pianobar-save,johndeeney/pianobar,tchajed/pianobar,johndeeney/pianobar,bmbove/pianobar-save,DavidZemon/pianobar,twahlfeld/pianobar,twahlfeld/pianobar,johndeeney/pianobar,gnowxilef/pianobar,johnso51/pianobar,gnowxilef/pianobar,bmbove/pianobar-save,twahlfeld/pianobar,tchajed/pianobar,gnowxilef/pianobar,twahlfeld/pianobar,johndeeney/pianobar,twahlfeld/pianobar,DavidZemon/pianobar,johnso51/pianobar,johnso51/pianobar,gnowxilef/pianobar,bmbove/pianobar-save,DavidZemon/pianobar,DavidZemon/pianobar,gnowxilef/pianobar,tchajed/pianobar,bmbove/pianobar-save,johndeeney/pianobar,tchajed/pianobar