Name a field to indicate it's only for keepalive

Author: alex

src/lib.rs

@@ -1,10 +1,5 @@
 #![no_std]
-#![feature(
-    allocator_api,
-    const_fn,
-    lang_items,
-    alloc_error_handler
-)]
+#![feature(allocator_api, const_fn, lang_items, alloc_error_handler)]
 
 #[macro_use]
 extern crate alloc;

src/sysctl.rs

@@ -56,7 +56,8 @@ impl SysctlStorage for atomic::AtomicBool {
 
 pub struct Sysctl<T: SysctlStorage> {
     inner: Box<T>,
-    table: Box<[bindings::ctl_table]>,
+    // Responsible for keeping the ctl_table alive.
+    _table: Box<[bindings::ctl_table]>,
     header: *mut bindings::ctl_table_header,
 }
 
@@ -138,7 +139,7 @@ impl<T: SysctlStorage> Sysctl<T> {
 
         return Ok(Sysctl {
             inner: storage,
-            table: table,
+            _table: table,
             header: result,
         });
     }