pytorch

d9fa957e - [quant][graphmode][fix] Handle the case when observed node has no users (#53210)

[quant][graphmode][fix] Handle the case when observed node has no users (#53210) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/53210 Test Plan: Imported from OSS Reviewed By: vkuzo Differential Revision: D26791724 fbshipit-source-id: b2a226a22d6aba86dd01cacbb56577048a289b3e