C error when running a function that returns a reference in a thread

[squidink7]

Describe the bug

When running a function that returns a reference with spawn, the V compiler generates a C error

Reproduction Steps

fn main() {
	foo := spawn get_pointer()
}

fn get_pointer() &int {
	val := 42
	return &val
}

Expected Behavior

the code to run without errors

Current Behavior

==================
/tmp/v_1000/cerror.01HPN17PE89B6R6R694Y84XW20.tmp.c:2103: error: ',' expected (got "thread")
...
==================

Possible Solution

No response

Additional Information/Context

No response

V version

0.4.4

Environment details (OS name and version, etc.)

V full version: V 0.4.4 c5a6aeb.ca45311
OS: linux, "Arch Linux"
Processor: 12 cpus, 64bit, little endian, AMD Ryzen 5 7640U w/ Radeon 760M Graphics

getwd: /home/sirsegv
vexe: /home/sirsegv/.v/v
vexe mtime: 2024-02-14 00:45:40

vroot: OK, value: /home/sirsegv/.v
VMODULES: OK, value: /home/sirsegv/.vmodules
VTMP: OK, value: /tmp/v_1000

Git version: git version 2.43.1
Git vroot status: 0.4.4-260-gca453117 (5 commit(s) behind V master)
.git/config present: true

CC version: cc (GCC) 13.2.1 20230801
thirdparty/tcc status: thirdparty-linux-amd64 12f392c3

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