EventEmitter: Use the 'exports' variable as global

Follows-up aba18feb4abb5a2d90947b0d404dc50783593462.

The local 'exports' variable is set to 'this'. Not sure why that was changed.
Swapped tabs for spaces.

Deal with it.

(•_•)
( •_•)>⌐■-■
(⌐■_■)