Fix CI by addressing the Clippy warnings

rs-matter/src/acl.rs

@@ -299,7 +299,7 @@ impl AclEntry {
     pub fn new(fab_idx: u8, privilege: Privilege, auth_mode: AuthMode) -> Self {
         const INIT_SUBJECTS: Option<u64> = None;
         const INIT_TARGETS: Option<Target> = None;
-        let privilege = privilege;
+
         Self {
             fab_idx: Some(fab_idx),
             privilege,

rs-matter/src/secure_channel/case.rs

@@ -90,7 +90,7 @@ impl<'a> Case<'a> {
     async fn handle_casesigma3(
         &mut self,
         exchange: &mut Exchange<'_>,
-        rx: &mut Packet<'_>,
+        rx: &Packet<'_>,
         tx: &mut Packet<'_>,
         case_session: &mut CaseSession,
     ) -> Result<(), Error> {

rs-matter/src/secure_channel/pake.rs

@@ -158,7 +158,7 @@ impl<'a> Pake<'a> {
     async fn handle_pasepake3(
         &mut self,
         exchange: &mut Exchange<'_>,
-        rx: &mut Packet<'_>,
+        rx: &Packet<'_>,
         tx: &mut Packet<'_>,
         mdns: &dyn Mdns,
         spake2p: &mut Spake2P,

rs-matter/src/transport/exchange.rs

@@ -90,6 +90,9 @@ impl<'a> ExchangeCtr<'a> {
         self.exchange.id()
     }
 
+    #[allow(clippy::all)]
+    // Should be #[allow(clippy::needless_pass_by_ref_mut)], but this is only in 1.73 which is not released yet
+    // rx is actually modified, but via an unsafe `*mut Packet<'static>` and apparently Clippy can't see this
     pub async fn get(mut self, rx: &mut Packet<'_>) -> Result<Exchange<'a>, Error> {
         let construction_notification = self.construction_notification;