V error when not initializing ?&Type

[islonely]

Describe the bug

V error when not setting struct's ?&Type field to none when Type contains a &Type2 field that needs initialized.

Reproduction Steps

struct Viewport {
mut:
	parent &Window
}

pub struct Window {
mut:
	desktop_viewport ?&Viewport
	phone_viewport   ?&Viewport
}

fn main() {
	_ := &Window{}
}

Expected Behavior

Expected code to compile with ?&Viewport set to none by default. No output.

Current Behavior

With the code above:

C:/Users/imado/Documents/test.v:13:8: error: reference field `Window.desktop_viewport.parent` must be initialized (part of struct `Viewport`)
   11 | 
   12 | fn main() {
   13 |     _ := &Window{}
      |           ~~~~~~~~
   14 | }
C:/Users/imado/Documents/test.v:13:8: error: reference field `Window.phone_viewport.parent` must be initialized (part of struct `Viewport`)
   11 | 
   12 | fn main() {
   13 |     _ := &Window{}
      |           ~~~~~~~~
   14 | }

When changing the fields to this it compiles and runs, but I get warnings about the default value being none already.

desktop_viewport ?&Viewport = none
phone_viewport   ?&Viewport = none

C:/Users/imado/Documents/test.v:8:32: warning: unnecessary default value of `none`: struct fields are zeroed by default
    6 | pub struct Window {
    7 | mut:
    8 |     desktop_viewport ?&Viewport = none
      |                                   ~~~~
    9 |     phone_viewport   ?&Viewport = none
   10 | }
C:/Users/imado/Documents/test.v:9:32: warning: unnecessary default value of `none`: struct fields are zeroed by default
    7 | mut:
    8 |     desktop_viewport ?&Viewport = none
    9 |     phone_viewport   ?&Viewport = none
      |                                   ~~~~
   10 | }
   11 |

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.2 37e5616.2af135d

Environment details (OS name and version, etc.)

V full version: V 0.4.2 37e5616.2af135d
OS: windows, Microsoft Windows 11 Pro v22621 64-bit
Processor: 16 cpus, 64bit, little endian, 

getwd: C:\Users\imado\Documents\cyberian_tiger
vexe: C:\Users\imado\v\v.exe
vexe mtime: 2023-10-12 22:43:22

vroot: OK, value: C:\Users\imado\v
VMODULES: OK, value: C:\Users\imado\.vmodules
VTMP: OK, value: C:\Users\imado\AppData\Local\Temp\v_0

Git version: git version 2.33.1.windows.1
Git vroot status: weekly.2023.41-5-g2af135d7
.git/config present: true

CC version: Error: 'cc' is not recognized as an internal or external command,
operable program or batch file.

thirdparty/tcc status: thirdparty-windows-amd64 e90c2620

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