fix json_exit test
fix json_exit test

Summary: In-flight merge conflict with 0.55 version bump

Reviewed By: mroch

Differential Revision: D5847393

fbshipit-source-id: e53340ce645cbb009a260fd925d2630bae42c249

claudiopro/flow,nmote/flow,claudiopro/flow,ylu1317/flow,popham/flow,gabelevi/flow,facebook/flow,MichaelDeBoey/flow,samwgoldman/flow,popham/flow,AgentME/flow,JonathanUsername/flow,MichaelDeBoey/flow,mroch/flow,mroch/flow,AgentME/flow,JonathanUsername/flow,gabelevi/flow,gabelevi/flow,claudiopro/flow,claudiopro/flow,jamesgpearce/flow,samwgoldman/flow,facebook/flow,gabelevi/flow,nmote/flow,TiddoLangerak/flow,jamesgpearce/flow,gabelevi/flow,ylu1317/flow,gabelevi/flow,MichaelDeBoey/flow,AgentME/flow,nmote/flow,jamesgpearce/flow,JonathanUsername/flow,AgentME/flow,gabelevi/flow,jamesgpearce/flow,popham/flow,samwgoldman/flow,mroch/flow,TiddoLangerak/flow,facebook/flow,samwgoldman/flow,samwgoldman/flow,facebook/flow,mroch/flow,TiddoLangerak/flow,MichaelDeBoey/flow,MichaelDeBoey/flow,samwgoldman/flow,jamesgpearce/flow,JonathanUsername/flow,nmote/flow,jamesgpearce/flow,popham/flow,JonathanUsername/flow,nmote/flow,ylu1317/flow,popham/flow,JonathanUsername/flow,mroch/flow,mroch/flow,popham/flow,facebook/flow,ylu1317/flow,ylu1317/flow,TiddoLangerak/flow,nmote/flow,TiddoLangerak/flow,claudiopro/flow,jamesgpearce/flow,samwgoldman/flow,facebook/flow,JonathanUsername/flow,popham/flow,mroch/flow,nmote/flow,facebook/flow,AgentME/flow