lambdas not working for option anonymous function struct field

[islonely]

Describe the bug

Option anonymous function struct fields are not having their value set when using lambdas.

Reproduction Steps

struct Foo {
	bar ?fn ()
}

fn main() {
	foo1 := Foo{
		bar: || println('foo1')
	}
	foo2 := Foo{
		bar: fn () {
			println('foo2')
		}
	}
	if bar_fn := foo1.bar {
		bar_fn()
	}
	if bar_fn := foo2.bar {
		bar_fn()
	}
}

Expected Behavior

outputs:

foo1
foo2

Current Behavior

outputs:

foo2

Possible Solution

No response

Additional Information/Context

No response

V version

V full version: V 0.4.1 68cbf27.b5f71df

Environment details (OS name and version, etc.)

V full version: V 0.4.1 68cbf27.b5f71df
OS: windows, Microsoft Windows 11 Pro v22621 64-bit
Processor: 16 cpus, 64bit, little endian, 

getwd: C:\frostbyte
vexe: C:\Users\imado\v\v.exe
vexe mtime: 2023-09-28 21:03:00

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.2023.39-14-gb5f71dff (6 commit(s) behind V master)
.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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