cgen: fix codegen for ifguard indexing array of option

[felipensp]

Fix #23438

[huly-for-github]

Connected to Huly®: V_0.6-21870

[louis77]

I took the liberty to check out your PR, it fixes the problem for me. So thank you!

[louis77]

I just discovered a problem which is probably related to this:

Code: https://play.vlang.io/p/d8791e9d1c

module main

fn make_option() ?string {
	return 'abc'
}

fn main() {
	cols := [make_option()]
	output := cols[0] or { 'unknown' }
	println('I made it ${output}')
}

Output:

I made it Option('abc')

The output should be

I made it abc

This happens only when the unwrapped value came from an array.

[felipensp]

I just discovered a problem which is probably related to this:

Code: https://play.vlang.io/p/d8791e9d1c

module main

fn make_option() ?string {
	return 'abc'
}

fn main() {
	cols := [make_option()]
	output := cols[0] or { 'unknown' }
	println('I made it ${output}')
}

Output:

I made it Option('abc')

The output should be

I made it abc

This happens only when the unwrapped value came from an array.

Can you file separate issue about it?

[spytheman]

Excellent work.