[BUG] compile-time error when not passing optional kwarg

[jbrockmendel]

cdef int64_t _tz_localize_using_tzinfo_api(
    int64_t val, tzinfo tz, bint to_utc=True, bint* fold=NULL, NPY_DATETIMEUNIT reso=NPY_FR_ns
) except? -1:
[...]

def whatever(...):
    local_val = utc_val + _tz_localize_using_tzinfo_api(utc_val, tz, to_utc=False, reso=reso)  # <-raises

Calling _tz_localize_using_tzinfo_api raises at compile time with C function call is missing argument 'fold'. This only started happening when the reso kwarg was added so im guessing it has to do with pointer arguments that aren't at the end of the signature.