Mihai Maruseac 22e07fb204 Fix multiple vulnerabilities in tf.experimental.dlpack.to_dlpack.
We have a use after free caused by memory coruption, a segmentation fault caused by memory corruption, several memory leaks and an undefined behavior when taking the reference of a nullptr.

PiperOrigin-RevId: 332568894
Change-Id: Ife0fc05e103b35325094ae5d822ee5fdea764572
2020-09-18 19:19:43 -07:00
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