important fix

Author: robamu

bitbybit/src/bitfield/parsing.rs

@@ -349,7 +349,7 @@ fn parse_field(base_data_size: usize, field: &Field) -> Result<FieldDefinition>
             field_name,
             &ranges,
             indexed_count,
-            indexed_stride,
+            &mut indexed_stride,
             number_of_bits,
             base_data_size,
         )?;
@@ -420,13 +420,13 @@ fn verify_bounds_for_array(
     field_name: &Ident,
     ranges: &[Range<usize>],
     indexed_count: usize,
-    indexed_stride: Option<usize>,
+    indexed_stride: &mut Option<usize>,
     number_of_bits: usize,
     base_data_size: usize,
 ) -> syn::Result<()> {
     if ranges.len() == 1 {
         // If stride wasn't given, use the field width
-        let indexed_stride = indexed_stride.unwrap_or(number_of_bits);
+        let indexed_stride = *indexed_stride.get_or_insert(number_of_bits);
         if number_of_bits > indexed_stride {
             return Err(Error::new_spanned(
                     field.attrs.first(),