Little pedantic changes

src/driver/export.rs

@@ -254,7 +254,7 @@ pub fn export_packed<'a>(
     )?;
     let target = Format::from_raw(format);
 
-    if matches!(target, Some(Format::Yuv420p) | Some(Format::Yuva420p)) {
+    if matches!(target, Some(Format::Yuv420p | Format::Yuva420p)) {
         let want_alpha = target == Some(Format::Yuva420p);
         let native = img.format;
         let mut planar = if !img.chroma_full
@@ -559,7 +559,7 @@ pub fn export_still_lossless<'a>(
         *converted_format = format;
     };
 
-    if matches!(target, Some(Format::Yuv420p) | Some(Format::Yuva420p)) {
+    if matches!(target, Some(Format::Yuv420p | Format::Yuva420p)) {
         let want_alpha = target == Some(Format::Yuva420p);
 
         ensure_yuva_rows(dsp, output, img, want_alpha, first, upto)?;

src/vp8/rac.rs

@@ -192,7 +192,7 @@ mod imp {
 
         #[inline(always)]
         fn set_range(&mut self, range: u32, pos: i32) {
-            let shift = range.leading_zeros() ^ 24;
+            let shift = range.leading_zeros() ^ 0b1_1000;
 
             self.c.range = range;
             self.shift = shift;

src/vp8l/huffman.rs

@@ -151,7 +151,7 @@ fn next_key(key: u32, len: u32) -> u32 {
     if inv == 0 {
         return key;
     }
-    let inv = 1u32 << (31 - inv.leading_zeros());
+    let inv = 1u32 << inv.ilog2();
     (key & (inv - 1)) + inv
 }