Fix some uncaught clippy warnings.

stdlib/src/ssl.rs

@@ -753,7 +753,7 @@ mod _ssl {
             vm: &VirtualMachine,
         ) -> PyResult<PySslSocket> {
             let mut ssl = zelf
-                .exec_ctx(|ctx| ssl::Ssl::new(ctx))
+                .exec_ctx(ssl::Ssl::new)
                 .map_err(|e| convert_openssl_error(vm, e))?;
 
             let socket_type = if args.server_side {

vm/src/stdlib/pystruct.rs

@@ -238,6 +238,7 @@ pub(crate) mod _struct {
 
     #[derive(Debug, Clone)]
     pub(crate) struct FormatSpec {
+        #[allow(dead_code)]
         endianness: Endianness,
         codes: Vec<FormatCode>,
         size: usize,

vm/src/vm.rs

@@ -1154,7 +1154,7 @@ impl VirtualMachine {
                 .map(|obj| func(obj.clone()))
                 .collect()
         } else {
-            self.map_pyiter(value, |obj| func(obj))
+            self.map_pyiter(value, func)
         }
     }