c error when wrapping a function in an optional function type

[heyimtcn]

Describe the bug

?Foo(none) with Foo being a function type def causes a build error

Reproduction Steps

v -cg -show-c-output -cc gcc .

type Foo = fn (bar string)

fn main() {
    mut func := ?Foo(none)
    dump(func)
}

Expected Behavior

a compiled program

Current Behavior

======== Output of the C Compiler (gcc) ========
C:\Users\nicof\AppData\Local\Temp\v_0\foo.01JB7DV7N82CMDR7ZC0RYB36A4.tmp.c: In function '_v_dump_expr__option_main__Foo':
C:\Users\nicof\AppData\Local\Temp\v_0\foo.01JB7DV7N82CMDR7ZC0RYB36A4.tmp.c:2305:24: error: too few arguments to function '_option_anon_fn_string_str'
 2305 |         string value = _option_anon_fn_string_str();
      |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Users\nicof\AppData\Local\Temp\v_0\foo.01JB7DV7N82CMDR7ZC0RYB36A4.tmp.c:2291:8: note: declared here
 2291 | string _option_anon_fn_string_str(_option_anon_fn_string it) { return indent__option_anon_fn_string_str(it, 0); }
      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Users\nicof\AppData\Local\Temp\v_0\foo.01JB7DV7N82CMDR7ZC0RYB36A4.tmp.c: In function 'main__main':
C:\Users\nicof\AppData\Local\Temp\v_0\foo.01JB7DV7N82CMDR7ZC0RYB36A4.tmp.c:13645:75: error: incompatible type for argument 4 of '_v_dump_expr__option_main__Foo'
13645 |          _v_dump_expr__option_main__Foo(_SLIT("foo.v"), 5, _SLIT("func"), func);
      |                                                                           ^~~~
      |                                                                           |
      |                                                                           _option_anon_fn_string
C:\Users\nicof\AppData\Local\Temp\v_0\foo.01JB7DV7N82CMDR7ZC0RYB36A4.tmp.c:2303:128: note: expected 'DumpFNType__option_main__Foo' {aka 'void (*)(string)'} but argument is of type '_option_anon_fn_string'
 2303 | DumpFNType__option_main__Foo _v_dump_expr__option_main__Foo(string fpath, int line, string sexpr, DumpFNType__option_main__Foo dump_arg) {
      |                                                                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
================================================

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.8 c8ddf21

Environment details (OS name and version, etc.)

V full version: V 0.4.8 c8ddf21
OS: windows, Microsoft Windows 11 Pro v22631 64-bit
Processor: 16 cpus, 64bit, little endian, 

getwd: C:\Users\nicof\Desktop\Projects\V\studytui
vexe: C:\Users\nicof\Desktop\v\v.exe
vexe mtime: 2024-10-27 16:43:14

vroot: OK, value: C:\Users\nicof\Desktop\v
VMODULES: OK, value: C:\Users\nicof\.vmodules
VTMP: OK, value: C:\Users\nicof\AppData\Local\Temp\v_0

Git version: git version 2.45.2.windows.1
Git vroot status: weekly.2024.43-47-gc8ddf219
.git/config present: true

CC version: Error: 'cc' is not recognized as an internal or external command,
operable program or batch file.

thirdparty/tcc: N/A

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_{Huly®: V_0.6-21119}