message: Remove redundant `std::convert` namespace in `padding`
diff: @@ -87,7 +87,7 @@ impl Padding {
  }
  }
  -impl std::convert::From<u16> for Padding {
  +impl From<u16> for Padding {
  fn from(p: u16) -> Self {
  Padding {
  top: p,
  @@ -98,7 +98,7 @@ impl std::convert::From<u16> for Padding {
  }
  }
  -impl std::convert::From<[u16; 2]> for Padding {
  +impl From<[u16; 2]> for Padding {
  fn from(p: [u16; 2]) -> Self {
  Padding {
  top: p[0],
  @@ -109,7 +109,7 @@ impl std::convert::From<[u16; 2]> for Padding {
  }
  }
  -impl std::convert::From<[u16; 4]> for Padding {
  +impl From<[u16; 4]> for Padding {
  fn from(p: [u16; 4]) -> Self {
  Padding {
  top: p[0],
  