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H A Dtee_api_operations.cdea9063e64e5036a0fca8e85bd0d89c008784f02 Fri Feb 19 14:57:05 UTC 2021 Jens Wiklander <jens.wiklander@linaro.org> libutee: check srcLen in TEE_CipherDoFinal()

Adds another check of srcLen in TEE_CipherDoFinal() before calling
tee_buffer_update() to make sure that we don't dereference destLen when
it's NULL.

This fixes coverity scan:
CID 1501811 (#1 of 1): Dereference after null check (FORWARD_NULL)

Reviewed-by: Jerome Forissier <jerome@forissier.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>