Automatically infer the type of the iterator in a range-based for loop (#48232)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48232
This was not the correct type that's being generated via the begin()
function and thus a new object was being created and attempted to take a
reference to. Instead just take a reference to whatever the range-based loop
generates.
Test Plan: This fixes a build error from a new warnign in llvm11
Reviewed By: smeenai
Differential Revision: D24970920
fbshipit-source-id: f125dca900f7550eee505b4f94781b6637533be0
