Fix fn reference and remove usize cast

Author: nicoburns

src/lib.rs

@@ -75,7 +75,9 @@ pub use crate::color::{
 pub use crate::cow_rc_str::CowRcStr;
 pub use crate::from_bytes::{stylesheet_encoding, EncodingSupport};
 #[doc(hidden)]
-pub use crate::macros::_cssparser_internal_to_lowercase;
+pub use crate::macros::{
+    _cssparser_internal_create_uninit_array, _cssparser_internal_to_lowercase,
+};
 pub use crate::nth::parse_nth;
 pub use crate::parser::{BasicParseError, BasicParseErrorKind, ParseError, ParseErrorKind};
 pub use crate::parser::{Delimiter, Delimiters, Parser, ParserInput, ParserState};

src/macros.rs

@@ -131,8 +131,7 @@ pub fn _cssparser_internal_create_uninit_array<const N: usize>() -> [MaybeUninit
 #[doc(hidden)]
 macro_rules! _cssparser_internal_to_lowercase {
     ($input: expr, $BUFFER_SIZE: expr => $output: ident) => {
-        const BUFFER_SIZE: usize = $BUFFER_SIZE as usize;
-        let mut buffer = $crate::macros::_cssparser_internal_create_uninit_array::<BUFFER_SIZE>();
+        let mut buffer = $crate::_cssparser_internal_create_uninit_array::<{ $BUFFER_SIZE }>();
         let input: &str = $input;
         let $output = $crate::_cssparser_internal_to_lowercase(&mut buffer, input);
     };