auto deref not working

[Eliyaan]

Describe the bug

V forgot to dereference the mut from what I can understand.

Reproduction Steps

This does not work

interface Ennemi {
}

struct Map {
    ennemis       []Ennemi
}

fn main() {
    mut maap := Map{}

    for mut ennemi in maap.ennemis {
        maap.ennemis.index(ennemi)
    }
}

While this works :

interface Ennemi {
}

struct Map {
    ennemis       []Ennemi
}

fn main() {
    mut maap := Map{}
    
    for mut ennemi in maap.ennemis {
        maap.ennemis.index(*ennemi)
    }
}

Expected Behavior

That V dereferences the mut to give it to .index()

Current Behavior

/tmp/v_1000/../../../../../../home/nopana/projects/Vely/test.v:12: error: pointer expected
builder error: 
==================
C error found. It should never happen, when compiling pure V code.

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.5 0e2b604

Environment details (OS name and version, etc.)

V full version: V 0.4.5 294f7e4.0e2b604
OS: linux, Linux version 6.6.13-200.fc39.x86_64 (mockbuild@72f11b2996ed4699b0f705186172808f) (gcc (GCC) 13.2.1 20231205 (Red Hat 13.2.1-6), GNU ld version 2.40-13.fc39) #1 SMP PREEMPT_DYNAMIC Sat Jan 20 18:03:28 UTC 2024
Processor: 4 cpus, 64bit, little endian, Intel(R) Pentium(R) Gold 7505 @ 2.00GHz

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