apply clippy div_ceil suggestion (#1770)

Author: dishmaker

base32ct/src/encoding.rs

@@ -261,7 +261,7 @@ pub const fn encoded_len<T: Encoding>(length: usize) -> usize {
     } else if T::PADDED {
         ((length - 1) / 5 + 1) * 8
     } else {
-        (length * 8 + 4) / 5
+        (length * 8).div_ceil(5)
     }
 }
 

der_derive/src/bitstring.rs

@@ -100,7 +100,7 @@ impl DeriveBitString {
                 min_expected_fields += 1;
             }
         }
-        let max_expected_bytes = (max_expected_fields + 7) / 8;
+        let max_expected_bytes = max_expected_fields.div_ceil(8);
 
         for (i, field) in self.fields.iter().enumerate().rev() {
             let field_name = &field.ident;

x509-cert/src/attr.rs

@@ -155,7 +155,7 @@ impl AttributeTypeAndValue {
         };
 
         // Decode der bytes from hex.
-        let mut bytes = Vec::with_capacity((val.len() + 1) / 2);
+        let mut bytes = Vec::with_capacity(val.len().div_ceil(2));
 
         while let (Some(h), Some(l)) = (iter.next(), iter.next()) {
             let mut byte = 0u8;