[hack] Fix small bug in HasTany visitor
[hack] Fix small bug in HasTany visitor

Summary: The difference between true and false is that one is the top element in the partial order of (bool, ||) and the other one is not.

Reviewed By: int3

Differential Revision: D2680774

fb-gh-sync-id: 44b296d58cb8be41c79cef1e6d8b05ff37f65299

OCamlPro/flow,claudiopro/flow,AprilArcus/flow,d14b3l/flow,facebook/flow,ForbesLindesay/flow,nmote/flow,popham/flow,popham/flow,gabro/flow,jamesgpearce/flow,chenglou/flow,AgentME/flow,AprilArcus/flow,jeffmo/flow,jamesgpearce/flow,mroch/flow,d14b3l/flow,TiddoLangerak/flow,JonathanUsername/flow,samwgoldman/flow,d14b3l/flow,AprilArcus/flow,samwgoldman/flow,fletcherw/flow,gabelevi/flow,mroch/flow,shiftcars/flow,jdelStrother/flow,samwgoldman/flow,claudiopro/flow,ForbesLindesay/flow,AgentME/flow,chenglou/flow,d14b3l/flow,JonathanUsername/flow,chenglou/flow,samwgoldman/flow,d14b3l/flow,shiftcars/flow,facebook/flow,ylu1317/flow,jamesgpearce/flow,gabelevi/flow,jdelStrother/flow,mroch/flow,graue/flow,AgentME/flow,nmote/flow,popham/flow,samwgoldman/flow,d14b3l/flow,jdelStrother/flow,jamesgpearce/flow,gabelevi/flow,claudiopro/flow,mroch/flow,fletcherw/flow,gabelevi/flow,jgrund/flow,JonathanUsername/flow,ylu1317/flow,mroch/flow,chenglou/flow,facebook/flow,facebook/flow,claudiopro/flow,jdelStrother/flow,chenglou/flow,OCamlPro/flow,gabelevi/flow,JonathanUsername/flow,ForbesLindesay/flow,TiddoLangerak/flow,graue/flow,MichaelDeBoey/flow,fletcherw/flow,shiftcars/flow,TiddoLangerak/flow,MichaelDeBoey/flow,jeffmo/flow,jeffmo/flow,AprilArcus/flow,ylu1317/flow,jamesgpearce/flow,facebook/flow,gabro/flow,samwgoldman/flow,facebook/flow,nmote/flow,cesarandreu/flow,ForbesLindesay/flow,AgentME/flow,samwgoldman/flow,gabro/flow,AprilArcus/flow,gabro/flow,shiftcars/flow,MichaelDeBoey/flow,JonathanUsername/flow,fletcherw/flow,jeffmo/flow,jgrund/flow,claudiopro/flow,MichaelDeBoey/flow,ForbesLindesay/flow,popham/flow,AprilArcus/flow,mroch/flow,OCamlPro/flow,nmote/flow,shiftcars/flow,jgrund/flow,nmote/flow,nmote/flow,fletcherw/flow,ForbesLindesay/flow,gabelevi/flow,gabelevi/flow,graue/flow,jdelStrother/flow,jgrund/flow,graue/flow,gabro/flow,ylu1317/flow,popham/flow,JonathanUsername/flow,nmote/flow,facebook/flow,jeffmo/flow,ylu1317/flow,fletcherw/flow,cesarandreu/flow,chenglou/flow,mroch/flow,jeffmo/flow,jdelStrother/flow,JonathanUsername/flow,jgrund/flow,popham/flow,shiftcars/flow,AgentME/flow,OCamlPro/flow,MichaelDeBoey/flow,TiddoLangerak/flow,jgrund/flow,cesarandreu/flow,graue/flow,graue/flow,cesarandreu/flow,jamesgpearce/flow,gabro/flow,popham/flow,TiddoLangerak/flow,jamesgpearce/flow