Fix more Windows compilation errors.

Author: sunfishcode

library/std/src/os/windows/io/handle.rs

@@ -116,9 +116,7 @@ impl OwnedHandle {
     /// Creates a new `OwnedHandle` instance that shares the same underlying file handle
     /// as the existing `OwnedHandle` instance.
     pub fn try_clone(&self) -> crate::io::Result<Self> {
-        let handle = self.duplicate(0, false, c::DUPLICATE_SAME_ACCESS)?;
-
-        Ok(unsafe { OwnedHandle::from_raw_handle(handle) })
+        self.duplicate(0, false, c::DUPLICATE_SAME_ACCESS)
     }
 
     pub(crate) fn duplicate(

library/std/src/os/windows/io/socket.rs

@@ -93,7 +93,7 @@ impl OwnedSocket {
         };
 
         if socket != c::INVALID_SOCKET {
-            unsafe { Ok(Self(OwnedSocket::from_raw_socket(socket))) }
+            unsafe { Ok(OwnedSocket::from_raw_socket(socket)) }
         } else {
             let error = unsafe { c::WSAGetLastError() };
 
@@ -117,12 +117,25 @@ impl OwnedSocket {
             }
 
             unsafe {
-                let socket = Self(OwnedSocket::from_raw_socket(socket));
+                let socket = OwnedSocket::from_raw_socket(socket);
                 socket.set_no_inherit()?;
                 Ok(socket)
             }
         }
     }
+
+    #[cfg(not(target_vendor = "uwp"))]
+    pub(crate) fn set_no_inherit(&self) -> io::Result<()> {
+        sys::cvt(unsafe {
+            c::SetHandleInformation(self.as_raw_socket() as c::HANDLE, c::HANDLE_FLAG_INHERIT, 0)
+        })
+        .map(drop)
+    }
+
+    #[cfg(target_vendor = "uwp")]
+    pub(crate) fn set_no_inherit(&self) -> io::Result<()> {
+        Err(io::Error::new_const(io::ErrorKind::Unsupported, &"Unavailable on UWP"))
+    }
 }
 
 /// Returns the last error from the Windows socket interface.

library/std/src/sys/windows/handle.rs

@@ -229,12 +229,16 @@ impl Handle {
         Ok(written as usize)
     }
 
+    pub fn try_clone(&self) -> io::Result<Self> {
+        Ok(Self(self.0.try_clone()?))
+    }
+
     pub fn duplicate(
         &self,
         access: c::DWORD,
         inherit: bool,
         options: c::DWORD,
-    ) -> io::Result<Handle> {
+    ) -> io::Result<Self> {
         Ok(Self(self.0.duplicate(access, inherit, options)?))
     }
 }

library/std/src/sys/windows/net.rs

@@ -129,7 +129,7 @@ impl Socket {
 
             unsafe {
                 let socket = Self::from_raw_socket(socket);
-                socket.set_no_inherit()?;
+                socket.0.set_no_inherit()?;
                 Ok(socket)
             }
         }
@@ -371,19 +371,6 @@ impl Socket {
         }
     }
 
-    #[cfg(not(target_vendor = "uwp"))]
-    fn set_no_inherit(&self) -> io::Result<()> {
-        sys::cvt(unsafe {
-            c::SetHandleInformation(self.as_raw_socket() as c::HANDLE, c::HANDLE_FLAG_INHERIT, 0)
-        })
-        .map(drop)
-    }
-
-    #[cfg(target_vendor = "uwp")]
-    fn set_no_inherit(&self) -> io::Result<()> {
-        Err(io::Error::new_const(io::ErrorKind::Unsupported, &"Unavailable on UWP"))
-    }
-
     pub fn shutdown(&self, how: Shutdown) -> io::Result<()> {
         let how = match how {
             Shutdown::Write => c::SD_SEND,