Handle maxRequests = 0 correctly on startup
Handle maxRequests = 0 correctly on startup

Summary: Ensure that we interpret maxRequest = 0 correctly during startup.

Reviewed By: ycking21

Differential Revision: D36725524

fbshipit-source-id: fcceb01fa452df2f360d536ab12ddf5c868f6e23

facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift