Tricksy workaround for PromiseKit/EZiOS7#2
Tricksy workaround for PromiseKit/EZiOS7#2

Refs PromiseKit/EZiOS7#2
mxcl/PromiseKit,mxcl/PromiseKit,allen-zeng/PromiseKit,allen-zeng/PromiseKit,mxcl/PromiseKit