c2nim fails to remove "LL" suffixes on types

[omentic]

c2nim correctly identifies the size of integers appended with LL or similar, but fails to remove those suffixes in the generated code.

Here is an example:

static inline double wl_fixed_to_double(wl_fixed_t f) {
	union {
		double d;
		int64_t i;
	} u;
	u.i = ((1023LL + 44LL) << 52) + (1LL << 51) + f;
	return u.d - (3LL << 43);
}

proc wl_fixed_to_double*(f: wl_fixed_t): cdouble {.inline.} =
  type
    INNER_C_UNION_wayland-util_616 {.bycopy, union.} = object
      d: cdouble
      i: int64_t

  var u: INNER_C_UNION_wayland-util_616
  u.i = ((1023LL'i64 + 44LL'i64) shl 52) + (1LL'i64 shl 51) + f
  return u.d - (3LL'i64 shl 43)