fix get_t10dix_lbaf for non-10dix drives

Differential Revision: D65219724

fbshipit-source-id: d364088e522c31edf18a5537e041299b94994e6c

Author: Kumar Amit

cookbooks/fb_storage/libraries/storage.rb

@@ -1376,7 +1376,7 @@ def self.get_t10dix_lbaf(device)
       # dpc_valid = (nsid_json['dpc'] & (1 << 2) != 0 && nsid_json['dpc'] & (1 << 4) != 0)
       dpc_valid = true
 
-      if lbaf != -1 && dpc_valid
+      if !lbaf.nil? && dpc_valid
         return lbaf
       else
         return -1