ws2_32: Return WSAEOPNOTSUPP in SIO_FLUSH.

dlls/ws2_32/socket.c

@@ -3369,10 +3369,6 @@ INT WINAPI WSAIoctl(SOCKET s, DWORD code, LPVOID in_buff, DWORD in_size, LPVOID
         }
     }
 
-    case WS_SIO_FLUSH:
-        FIXME("SIO_FLUSH: stub.\n");
-        break;
-
     case WS_SIO_GET_EXTENSION_FUNCTION_POINTER:
     {
 #define EXTENSION_FUNCTION(x, y) { x, y, #y },

dlls/ws2_32/tests/sock.c

@@ -4135,9 +4135,8 @@ static void test_unsupported_ioctls(void)
         WSASetLastError(0xdeadbeef);
         size = 0xdeadbeef;
         ret = WSAIoctl(s, codes[i], NULL, 0, NULL, 0, &size, NULL, NULL);
-        todo_wine_if (codes[i] == SIO_FLUSH)
-            ok(ret == -1, "expected failure\n");
-        todo_wine_if (codes[i] == FIOASYNC || codes[i] == SIO_FLUSH)
+        ok(ret == -1, "expected failure\n");
+        todo_wine_if (codes[i] == FIOASYNC)
             ok(WSAGetLastError() == WSAEOPNOTSUPP, "got error %u\n", WSAGetLastError());
         todo_wine_if (codes[i] == FIOASYNC)
             ok(!size, "got size %u\n", size);
@@ -4147,24 +4146,21 @@ static void test_unsupported_ioctls(void)
         overlapped.Internal = 0xdeadbeef;
         overlapped.InternalHigh = 0xdeadbeef;
         ret = WSAIoctl(s, codes[i], NULL, 0, NULL, 0, &size, &overlapped, NULL);
-        todo_wine_if (codes[i] == SIO_FLUSH)
             ok(ret == -1, "expected failure\n");
-        todo_wine_if (codes[i] == FIOASYNC || codes[i] == SIO_FLUSH)
+        todo_wine_if (codes[i] == FIOASYNC)
             ok(WSAGetLastError() == ERROR_IO_PENDING, "got error %u\n", WSAGetLastError());
-        todo_wine_if (codes[i] == SIO_FLUSH)
-            ok(size == 0xdeadbeef, "got size %u\n", size);
+        ok(size == 0xdeadbeef, "got size %u\n", size);
 
         ret = GetQueuedCompletionStatus(port, &size, &key, &overlapped_ptr, 0);
-        todo_wine_if (codes[i] == SIO_FLUSH)
-            ok(!ret, "expected failure\n");
-        todo_wine_if (codes[i] == FIOASYNC || codes[i] == SIO_FLUSH)
+        ok(!ret, "expected failure\n");
+        todo_wine_if (codes[i] == FIOASYNC)
             ok(GetLastError() == ERROR_NOT_SUPPORTED, "got error %u\n", GetLastError());
         todo_wine_if (codes[i] == FIOASYNC)
             ok(!size, "got size %u\n", size);
         ok(key == 123, "got key %Iu\n", key);
         todo_wine_if (codes[i] == FIOASYNC)
             ok(overlapped_ptr == &overlapped, "got overlapped %p\n", overlapped_ptr);
-        todo_wine_if (codes[i] == FIOASYNC || codes[i] == SIO_FLUSH)
+        todo_wine_if (codes[i] == FIOASYNC)
             ok((NTSTATUS)overlapped.Internal == STATUS_NOT_SUPPORTED,
                     "got status %#x\n", (NTSTATUS)overlapped.Internal);
         todo_wine_if (codes[i] == FIOASYNC)
@@ -4182,15 +4178,13 @@ static void test_unsupported_ioctls(void)
         apc_count = 0;
         size = 0xdeadbeef;
         ret = WSAIoctl(s, codes[i], NULL, 0, NULL, 0, &size, &overlapped, socket_apc);
-        todo_wine_if (codes[i] == SIO_FLUSH)
-            ok(ret == -1, "expected failure\n");
-        todo_wine_if (codes[i] == FIOASYNC || codes[i] == SIO_FLUSH)
+        ok(ret == -1, "expected failure\n");
+        todo_wine_if (codes[i] == FIOASYNC)
             ok(WSAGetLastError() == ERROR_IO_PENDING, "got error %u\n", WSAGetLastError());
-        todo_wine_if (codes[i] == SIO_FLUSH)
-            ok(size == 0xdeadbeef, "got size %u\n", size);
+        ok(size == 0xdeadbeef, "got size %u\n", size);
 
         ret = SleepEx(0, TRUE);
-        todo_wine_if (codes[i] == FIOASYNC || codes[i] == SIO_FLUSH)
+        todo_wine_if (codes[i] == FIOASYNC)
             ok(ret == WAIT_IO_COMPLETION, "got %d\n", ret);
         if (ret == WAIT_IO_COMPLETION)
         {