Fix warnings

Author: flba-eb

src/lib.rs

@@ -329,13 +329,19 @@ impl<'a> DerefMut for MaybeUninitSlice<'a> {
 pub struct TcpKeepalive {
     #[cfg_attr(target_os = "openbsd", allow(dead_code))]
     time: Option<Duration>,
-    #[cfg(not(any(target_os = "openbsd", target_os = "redox", target_os = "solaris")))]
+    #[cfg(not(any(
+        target_os = "openbsd",
+        target_os = "redox",
+        target_os = "solaris",
+        target_os = "nto",
+    )))]
     interval: Option<Duration>,
     #[cfg(not(any(
         target_os = "openbsd",
         target_os = "redox",
         target_os = "solaris",
-        target_os = "windows"
+        target_os = "windows",
+        target_os = "nto",
     )))]
     retries: Option<u32>,
 }
@@ -345,13 +351,19 @@ impl TcpKeepalive {
     pub const fn new() -> TcpKeepalive {
         TcpKeepalive {
             time: None,
-            #[cfg(not(any(target_os = "openbsd", target_os = "redox", target_os = "solaris")))]
+            #[cfg(not(any(
+                target_os = "openbsd",
+                target_os = "redox",
+                target_os = "solaris",
+                target_os = "nto",
+            )))]
             interval: None,
             #[cfg(not(any(
                 target_os = "openbsd",
                 target_os = "redox",
                 target_os = "solaris",
-                target_os = "windows"
+                target_os = "windows",
+                target_os = "nto",
             )))]
             retries: None,
         }