Check for NULLs.
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Reviewed-by: NManoj Kumar <manoj@linux.vnet.ibm.com>
Signed-off-by: NDon Brace <don.brace@pmcs.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>