GHSA-4HVV-7X94-7VQ8 Null dereference in Grappler's `TrySimplify`

Impact The implementation of TrySimplify has undefined behavior due to dereferencing a null pointer in corner cases that result in optimizing a node with no inputs. Patches We have patched the issue in GitHub commit e6340f0665d53716ef3197ada88936c2a5f7a2d3. The fix will be included in TensorFlow...