Exclude Promise from Mocha global leak checks
Exclude Promise from Mocha global leak checks

Since we set and unset Promise globally as part of the tests and Mocha
runs global variable leak checks before and after the hook functions,
the Promise variable must be excluded from such checks.

Signed-off-by: Kevin Locke <ffb4761cba839470133bee36aeb139f58d7dbaa9@kevinlocke.name>

kevinoid/stream-compare,kevinoid/stream-compare,kevinoid/stream-compare