Prevents dereference of null when call TCSP_NV_ReadValueAuth_Internal
Prevents dereference of null when call TCSP_NV_ReadValueAuth_Internal

Related coverity CID 10289

tcs_wrap_NV_ReadValueAuth can call TCSP_NV_ReadValueAuth_Internal
with a null auth. However, the latter was dereferencing the pointer
var containing the auth data without checking it, which possibly could
cause a dereference null error.

Signed-off-by: Richard Maciel <53a1d88320a92db6ddbc22bd99f66cf1c8f80da0@linux.vnet.ibm.com>

emilcondrea/trousers,Distrotech/trousers,emilcondrea/trousers,Distrotech/trousers,emilcondrea/trousers,Distrotech/trousers