Wrong results triggered by dead code

[debilosaurus]

Describe the bug

Adding some unused code changes the result of "magnitude()".

Reproduction Steps

import math.vec

// start: dead code, toggle bug
type UnusedType = vec.Vec3[f32]
fn (n UnusedType) unused_function() f32 {
	return n.mul_scalar(2).magnitude()
}
// end: dead code

fn main() {
	// correct values: 0.8660254, 2.598076
	println(vec.Vec3[f32]{0.5,0.5,0.5}.magnitude())
	println(vec.Vec3[f32]{1.5,1.5,1.5}.magnitude())
}

Expected Behavior

0.8660254
2.598076

Current Behavior

0.0
2.449490

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.9 7eec8b1

Environment details (OS name and version, etc.)

https://play.vlang.io/p/f1b6730843

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_{Huly®: V_0.6-21708}

[felipensp]

Checking the diff...

Using the following code commented vs uncommented

fn (n UnusedType) unused_function() {
	//n.mul_scalar(2)
}