use usize::from instead of as

Signed-off-by: Facundo Tuesca <[email protected]>

Author: facutuesca

src/rust/src/declarative_asn1/decode.rs

@@ -135,7 +135,7 @@ fn decode_bitstring<'a>(
     annotation: &Annotation,
 ) -> ParseResult<pyo3::Bound<'a, BitString>> {
     let value = read_value::<asn1::BitString<'a>>(parser, &annotation.encoding)?;
-    let n_bits = value.as_bytes().len() * 8 - (value.padding_bits() as usize);
+    let n_bits = value.as_bytes().len() * 8 - usize::from(value.padding_bits());
     check_size_constraint(&annotation.size, n_bits, "BIT STRING")?;
 
     let data = pyo3::types::PyBytes::new(py, value.as_bytes()).unbind();

src/rust/src/declarative_asn1/encode.rs

@@ -191,7 +191,7 @@ impl asn1::Asn1Writable for AnnotatedTypeObject<'_> {
                 let bitstring: asn1::BitString<'_> =
                     asn1::BitString::new(val.get().data.as_bytes(py), val.get().padding_bits)
                         .ok_or(asn1::WriteError::AllocationError)?;
-                let n_bits = bitstring.as_bytes().len() * 8 - (bitstring.padding_bits() as usize);
+                let n_bits = bitstring.as_bytes().len() * 8 - usize::from(bitstring.padding_bits());
                 check_size_constraint(&annotation.size, n_bits, "BIT STRING")
                     .map_err(|_| asn1::WriteError::AllocationError)?;
                 write_value(writer, &bitstring, encoding)