`(0).div(0.0)` should be NaN; fix
MODIFY
src/numeric.c
src/numeric.c
@@ -829,7 +829,7 @@ fix_divmod(mrb_state *mrb, mrb_value x)
mrb_value a, b;
flodivmod(mrb, (mrb_float)mrb_fixnum(x), mrb_to_flo(mrb, y), &div, &mod);
- a = mrb_float_value(mrb, (mrb_int)div);
+ a = mrb_float_value(mrb, div);
b = mrb_float_value(mrb, mod);
return mrb_assoc_new(mrb, a, b);
}

`(0).div(0.0)` should be NaN; fix #3754