Fix - Use of uninitialized value $ENV{"MIRROR"} in numeric eq (==)
Fix - Use of uninitialized value $ENV{"MIRROR"} in numeric eq (==)

Change-Id: I08e93a73d048a8874e69fa2a6242823b415ec5fc
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/28069
Reviewed-by: Prachi Gupta <25a72946fc4ec2539bba3cff1fbb2916af6a7649@us.ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Reviewed-by: Martin Gloff <df0a4963746ae04ab678d064fccc7ee68adfd751@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Matthew A. Ploetz <9c4e62337697f225e3360ddd1441dbba069477f9@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot