Avoid guarding on zero-ness with meta tensors. (#94399)
This removes one of the == 0 tests that occur when you construct a tensor with SymInts. Unfortunately there are more, so I can't test this.
Signed-off-by: Edward Z. Yang <ezyang@meta.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/94399
Approved by: https://github.com/albanD
