install/55991: GPT installation of NetBSD/amd64 9.99.80 has unused space in disk

[ryo%tetera.org@localhost]

>Number:         55991
>Category:       install
>Synopsis:       GPT installation of NetBSD/amd64 9.99.80 has unused space in disk
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Feb 13 05:35:00 +0000 2021
>Originator:     Ryo ONODERA
>Release:        NetBSD 9.99.80
>Organization:
Ryo ONODERA // ryo%tetera.org@localhost
PGP fingerprint = 82A2 DC91 76E0 A10A 8ABB  FD1B F404 27FA C7D1 15F3
>Environment:
	
	
System: NetBSD brownie 9.99.80 NetBSD 9.99.80 (DTRACE7) #6: Sat Feb 13 08:23:59 JST 2021 ryoon@brownie:/usr/world/9.99/amd64/obj/sys/arch/amd64/compile/DTRACE7 amd64
Architecture: x86_64
Machine: amd64
>Description:
Using http://nycdn.netbsd.org/pub/NetBSD-daily/HEAD/202102120920Z/images/NetBSD-9.99.80-amd64-install.img.gz ,
sysinst creates GPT partitions as follows by default:

# gpt show wd0
      start       size  index  contents
          0          1         PMBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34       2014         Unused
       2048     262144      1  GPT part - EFI System
     264192  483258989      2  GPT part - NetBSD FFSv1/FFSv2
  483523181       1427         Unused
  483524608   16593551      3  GPT part - NetBSD swap
  500118159         32         Sec GPT table
  500118191          1         Sec GPT header

Unused space (size: 1427) is created.
I want to use full disk space.
	
>How-To-Repeat:
Install NetBSD/amd64 9.99.80 with sysinst
in NetBSD-9.99.80-amd64-install.img.gz.
And run
# gpt show wd0
	
>Fix:
	
I have no idea.

>Unformatted: