Remove ToDo for pass-by-reference.

exec/load/lightbar.js

@@ -30,7 +30,7 @@
  *  hbg: Background colour of a current item
  *  kfg: Hotkey forground colour for non-current item
  *  khfg: Hotkey foreground colour for current item
- *  current: Index of currently highlighted item (ToDo: This should be passed by reference (how?)!)
+ *  current: Index of currently highlighted item
  *  align: If width is greater than the text length, a zero indicates the text
  *         should be left-aligned, a 1 indicates it should be right-aligned, and
  *         a 2 indicates it should be centered.