Mutable variable in closure not updating in anonymous function

[lv37]

Describe the bug

module main

fn main() {
	mut a := 1
	modify_a := fn [mut a] () {
		a = 2 // warning: unused variable: `a` ??
	}
	modify_a()
	println(a) // It should print `2` but it prints `1`
}

Reproduction Steps

Run the above

Expected Behavior

2

Current Behavior

src/main.v:5:22: warning: unused variable: `a`
    3 | fn main() {
    4 |     mut a := 1
    5 |     modify_a := fn [mut a] () {
      |                         ^
    6 |         a = 2 // warning: unused variable: `a` ????
    7 |     }
1

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.3 09d05bb

Environment details (OS name and version, etc.)

V full version: V 0.4.3 b347f54.09d05bb
OS: linux, Linux version 6.6.3-200.fc39.x86_64 (mockbuild@62256c00a5854842b8d1a622060ebc27) (gcc (GCC) 13.2.1 20231011 (Red Hat 13.2.1-4), GNU ld version 2.40-13.fc39) #1 SMP PREEMPT_DYNAMIC Tue Nov 28 19:11:52 UTC 2023
Processor: 4 cpus, 64bit, little endian, Intel(R) Core(TM) i5-4310U CPU @ 2.00GHz

getwd: /home/user/Projects/v-testing/hypixel
vexe: /home/user/.local/lib/v/v
vexe mtime: 2023-12-06 09:47:42

vroot: OK, value: /home/user/.local/lib/v
VMODULES: OK, value: /home/user/.vmodules
VTMP: OK, value: /tmp/v_1002

Git version: git version 2.43.0
Git vroot status: weekly.2023.48-59-g09d05bb5
.git/config present: true

CC version: cc (GCC) 13.2.1 20231011 (Red Hat 13.2.1-4)
thirdparty/tcc status: thirdparty-linux-amd64 12f392c3

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[lv37]

not a bug https://discord.com/channels/592103645835821068/592114487759470596/1181899036471607317