Repair disk enumeration for image type MPA (all disks)

Author: Sebastian-Roth

Buildroot/board/FOG/FOS/rootfs_overlay/usr/share/fog/lib/funcs.sh

@@ -1383,7 +1383,7 @@ getHardDisk() {
             fi
         done
         [[ -z $hd ]] && handleError "No disk found matching the sector count ${fdrive} (${FUNCNAME[0]})\n   Args Passed: $*"
-    else
+    elif [[ -n $fdrive ]]; then
         hd=$(echo $fdrive)
     fi
     [[ -n $hd ]] && return