Resolve with closed over variables instead of stack frame (#22270)
Summary:
Previously we looked at the stack frame of the function that called
`script` to resolve variables. This doesn't work if someone calls script
with a function defined somewhere else that references captured
variables. We already have a mechanism to look at the closed over
variables for a function, so this changes the `rcb` to use that.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22270
Pulled By: driazati
Differential Revision: D16391346
fbshipit-source-id: ad9b314ae86c249251b106079e76a5d7cf6c04c2
