DSK: Update, make Polybar script more robust

.config/dsk/run/polybar

@@ -25,5 +25,11 @@ for monitor in $secondary_monitors; do
 	polybar -r secondary-2 &
 done
 
+# Trap our exit
+die() {
+	pkill -P "$PID"
+}
+trap die EXIT
+
 # And wait
 wait