Fix memory leak in boxes.
Fix memory leak in boxes.

Array elements where free'ed but not the array itself.

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