make sure the counter stays correct in between bailout transitions (#30186)
Summary:
This fixes the second issue reported in https://github.com/pytorch/pytorch/issues/29909 namely, a loop counter is assigned the wrong values after transitioning to a bailout graph.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30186
Differential Revision: D18646845
Pulled By: Krovatkin
fbshipit-source-id: 1f7c601dd9f35892979385ffa132fb0886a4f203
