cgen: fix codegen for match with sumtype ptrptr

[felipensp]

Fix #23776

[huly-for-github]

Connected to Huly®: V_0.6-22196

[spytheman]

Excellent work.

[spytheman]

The second example from the issue:

pub type Command = Assign | Call

pub struct Assign {}

pub struct Call {
mut:
	text string
}

fn main() {
	mut command_arr_ptr := [ &Command(Call{}) ]
	mut command_arr_el_ptr := command_arr_ptr[0]
	println(typeof(command_arr_el_ptr)) // builder error: expected struct or union but not 'struct main__Command *'
}

still fails.

Should I re-open the issue after merging this PR?

[Delta456]

How about we make another issue with this code sample? That seems like a better idea to me.

[felipensp]

Yes, I think we should split the issues.

[Delta456]

Good work

[felipensp]

The second example from the issue:

pub type Command = Assign | Call

pub struct Assign {}

pub struct Call {
mut:
	text string
}

fn main() {
	mut command_arr_ptr := [ &Command(Call{}) ]
	mut command_arr_el_ptr := command_arr_ptr[0]
	println(typeof(command_arr_el_ptr)) // builder error: expected struct or union but not 'struct main__Command *'
}

still fails.

Should I re-open the issue after merging this PR?

Pushed a fix for the second example.