Fix some clippy warnings

src/decode/qr/correct.rs

@@ -56,7 +56,7 @@ fn calculate_syndromes(block: &[u8], block_info: &BlockInfo) -> (bool, Vec<GF8>)
 
     let mut all_fine = true;
     for i in 0..block_info.ec_cap * 2 {
-        syndromes[i as usize] = syndrome(&block, EXP8[i as usize]);
+        syndromes[i as usize] = syndrome(block, EXP8[i as usize]);
         if syndromes[i as usize] != GF8(0) {
             all_fine = false;
         }

src/detect/linescan.rs

@@ -92,7 +92,7 @@ impl Detect<GrayImage> for LineScan {
             // Step 2
             // Run the refinement functions on the candidate location
             for (refine_func, dx, dy, is_diagonal) in &refine_func {
-                let vert = refine_func(&self, prepared, &finder, module_size);
+                let vert = refine_func(self, prepared, &finder, module_size);
 
                 if vert.is_none() {
                     last_pixel = p.channels()[0];
@@ -449,6 +449,7 @@ fn dist(one: &Point, other: &Point) -> f64 {
 }
 
 #[inline]
+#[allow(clippy::manual_map)]
 fn find_qr(one: &Point, two: &Point, three: &Point, module_size: f64) -> Option<QRLocation> {
     // Try all three combinations of points to see if any of them are a QR
     if let Some(qr) = find_qr_internal(one, two, three, module_size) {

src/util/chomp.rs

@@ -76,7 +76,7 @@ impl Chomp {
     /// If requesting fewer than 8 bits, the result will be in the least significant bits of the u8
     pub fn chomp(&mut self, nr_bits: u8) -> Option<u8> {
         let bit_count = BitCount(nr_bits as usize);
-        if nr_bits < 1 || nr_bits > 8 || bit_count > self.bits_left {
+        if !(1..=8).contains(&nr_bits) || bit_count > self.bits_left {
             return None;
         }