efi_loader: add missing breaks

Otherwise with GUID partition types you would end up with things like:

  .../HD(Part0,Sig6252c819-4624-4995-8d16-abc9cd5d4130)/HD(Part0,MBRType=02,SigType=02)

Signed-off-by: Rob Clark <robdclark@gmail.com>
[agraf: rebased]
Signed-off-by: Alexander Graf <agraf@suse.de>

lib/efi_loader/efi_device_path_to_text.c

@@ -154,10 +154,12 @@ static char *dp_media(char *s, struct efi_device_path *dp)
 		case SIG_TYPE_GUID:
 			s += sprintf(s, "HD(Part%d,Sig%pUl)",
 				     hddp->partition_number, sig);
+			break;
 		default:
 			s += sprintf(s, "HD(Part%d,MBRType=%02x,SigType=%02x)",
 				     hddp->partition_number, hddp->partmap_type,
 				     hddp->signature_type);
+			break;
 		}
 
 		break;