clippy fixes

Author: abr-egn

src/de/raw.rs

@@ -1307,14 +1307,14 @@ impl<'de> serde::de::Deserializer<'de> for &mut RegexAccess<'de> {
                 self.stage = RegexDeserializationStage::Options;
                 match &self.re {
                     BsonCow::Borrowed(re) => visitor.visit_borrowed_str(re.pattern.as_str()),
-                    BsonCow::Owned(re) => visitor.visit_str(&re.pattern.as_str()),
+                    BsonCow::Owned(re) => visitor.visit_str(re.pattern.as_str()),
                 }
             }
             RegexDeserializationStage::Options => {
                 self.stage = RegexDeserializationStage::Done;
                 match &self.re {
                     BsonCow::Borrowed(re) => visitor.visit_borrowed_str(re.options.as_str()),
-                    BsonCow::Owned(re) => visitor.visit_str(&re.options.as_str()),
+                    BsonCow::Owned(re) => visitor.visit_str(re.options.as_str()),
                 }
             }
             RegexDeserializationStage::Done => {

src/raw/cstr.rs

@@ -39,13 +39,17 @@ impl CStr {
         self.as_str().len()
     }
 
+    pub fn is_empty(&self) -> bool {
+        self.as_str().is_empty()
+    }
+
     pub(crate) fn append_to(&self, buf: &mut Vec<u8>) {
         buf.extend(&self.data);
         buf.push(0);
     }
 }
 
-impl<'a, 'b> PartialEq<&'b CStr> for &'a CStr {
+impl PartialEq<&CStr> for &CStr {
     fn eq(&self, other: &&CStr) -> bool {
         self.as_str() == other.as_str()
     }