Fix issue #118.
Fix issue #118.

        unsigned long is %lu not %ul

carnager/rofi,jubalh/rofi,stettberger/rofi,jreinert/rofi,t-wissmann/rofi,daemonl/rofi,jubalh/rofi,carnager/rofi,stettberger/rofi,ThomasAdam/rofi,eigengrau/rofi,t-wissmann/rofi,eigengrau/rofi,jreinert/rofi,carnager/rofi,daemonl/rofi,ThomasAdam/rofi