Drain both fulfill and reject handlers at the same time when resolving or rejecting a SimplePromise.
Drain both fulfill and reject handlers at the same time when resolving or rejecting a SimplePromise.

Dador/libjass,joshuabrown-ellation/libjass,Dador/libjass,Arnavion/libjass,Arnavion/libjass,joshuabrown-ellation/libjass,Dador/libjass,Arnavion/libjass,joshuabrown-ellation/libjass