Revert D30875977: [caffe2] [aten] Remove loose (unpaired) #pragma warning ( pop ) in TensorBase.h
Test Plan: revert-hammer
Differential Revision:
D30875977 (https://github.com/pytorch/pytorch/commit/1f35d20a894bb07e27691332af4beb097142762f)
Original commit changeset: bd593feb5a75
fbshipit-source-id: 4c82dbc857fdb28e0240dacc1a0e607a76552bb4