make default_executor non pub

Signed-off-by: jiaxiao zhou <[email protected]>

Author: Mossaka

crates/containerd-shim-wasmtime/src/executors/container.rs

@@ -8,7 +8,7 @@ use std::{fs::OpenOptions, path::PathBuf};
 
 #[derive(Default)]
 pub struct LinuxContainerExecutor {
-    pub default_executor: DefaultExecutor,
+    default_executor: DefaultExecutor,
 }
 
 impl Executor for LinuxContainerExecutor {

crates/containerd-shim-wasmtime/src/instance.rs

@@ -227,9 +227,7 @@ impl Wasi {
             stdout,
             stderr,
         });
-        let default_executor = Box::new(LinuxContainerExecutor {
-            ..Default::default()
-        });
+        let default_executor = Box::new(LinuxContainerExecutor::default());
         let container = ContainerBuilder::new(self.id.clone(), syscall.as_ref())
             .with_executor(vec![default_executor, wasmtime_executor])?
             .with_root_path(self.rootdir.clone())?