There was already handling for a NULL map pointer pointer, but the inner
pointer wasn't checked. Treat pointer to NULL as a no-op as well to
simplify calling code.
Change-Id: I0a213233c021957ab2f4b6c1dd304034ca98b868
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/367433
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>