Fix mistake when compiling array literals.
Fix mistake when compiling array literals.

The values were being used as keys, and vice versa.

guiquanz/mujs,ccxvii/mujs,lsm/mujs,thurday/mujs,ccxvii/mujs,evanlabs/mujs,ccxvii/mujs,Frky/mujs,ccxvii/mujs,BOGY/mujs