Fix clippy::unnecessary_fallible_conversions

Author: cuviper

src/biguint/convert.rs

@@ -845,7 +845,7 @@ fn test_radix_bases() {
  for radix in 3u32..256 {
  if !radix.is_power_of_two() {
  let (base, power) = get_radix_base(radix);
- let radix = BigDigit::try_from(radix).unwrap();
+ let radix = BigDigit::from(radix);
  let power = u32::try_from(power).unwrap();
  assert_eq!(base, radix.pow(power));
  assert!(radix.checked_pow(power + 1).is_none());
@@ -858,7 +858,7 @@ fn test_half_radix_bases() {
  for radix in 3u32..256 {
  if !radix.is_power_of_two() {
  let (base, power) = get_half_radix_base(radix);
- let radix = BigDigit::try_from(radix).unwrap();
+ let radix = BigDigit::from(radix);
  let power = u32::try_from(power).unwrap();
  assert_eq!(base, radix.pow(power));
  assert!(radix.pow(power + 1) > big_digit::HALF);