ws2_32: Avoid retrieving the fd twice in WSAIoctl.

dlls/ws2_32/socket.c

@@ -2113,11 +2113,6 @@ INT WINAPI WSAIoctl(SOCKET s,
                     LPWSAOVERLAPPED lpOverlapped,
                     LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
 {
-   int fd = get_sock_fd( s, 0, NULL );
-   INT ret;
-
-   if (fd == -1) return SOCKET_ERROR;
-
    TRACE("%d, 0x%08lx, %p, %ld, %p, %ld, %p, %p, %p\n", 
        s, dwIoControlCode, lpvInBuffer, cbInBuffer, lpbOutBuffer,
        cbOutBuffer, lpcbBytesReturned, lpOverlapped, lpCompletionRoutine);
@@ -2126,50 +2121,40 @@ INT WINAPI WSAIoctl(SOCKET s,
    {
    case WS_FIONBIO:
         if (cbInBuffer != sizeof(u_long)) {
-            release_sock_fd( s, fd );
             WSASetLastError(WSAEFAULT);
             return SOCKET_ERROR;
         }
-        ret = WS_ioctlsocket( s, WS_FIONBIO, lpvInBuffer);
-        if (ret == SOCKET_ERROR) {
-            release_sock_fd( s, fd );
-            /* last error already set by WS_ioctlsocket */
-            return ret;
-        }
-	break;
+        return WS_ioctlsocket( s, WS_FIONBIO, lpvInBuffer);
+
    case WS_FIONREAD:
         if (cbOutBuffer != sizeof(u_long)) {
-            release_sock_fd( s, fd );
             WSASetLastError(WSAEFAULT);
             return SOCKET_ERROR;
         }
-        ret = WS_ioctlsocket( s, WS_FIONREAD, lpbOutBuffer);
-        if (ret == SOCKET_ERROR) {
-            release_sock_fd( s, fd );
-            /* last error already set by WS_ioctlsocket */
-            return ret;
-        }
-	break;
+        return WS_ioctlsocket( s, WS_FIONREAD, lpbOutBuffer);
+
    case SIO_GET_INTERFACE_LIST:
        {
            INTERFACE_INFO* intArray = (INTERFACE_INFO*)lpbOutBuffer;
            DWORD size, numInt, apiReturn;
+           int fd;
 
            TRACE("-> SIO_GET_INTERFACE_LIST request\n");
 
            if (!lpbOutBuffer)
            {
-               release_sock_fd( s, fd );
                WSASetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
            if (!lpcbBytesReturned)
            {
-               release_sock_fd( s, fd );
                WSASetLastError(WSAEFAULT);
                return SOCKET_ERROR;
            }
 
+           fd = get_sock_fd( s, 0, NULL );
+           if (fd == -1) return SOCKET_ERROR;
+
            apiReturn = GetAdaptersInfo(NULL, &size);
            if (apiReturn == ERROR_NO_DATA)
            {
@@ -2273,6 +2258,7 @@ INT WINAPI WSAIoctl(SOCKET s,
            }
            /* Calculate the size of the array being returned */
            *lpcbBytesReturned = sizeof(INTERFACE_INFO) * numInt;
+           release_sock_fd( s, fd );
            break;
        }
 
@@ -2288,13 +2274,10 @@ INT WINAPI WSAIoctl(SOCKET s,
 
    default:
        FIXME("unsupported WS_IOCTL cmd (%08lx)\n", dwIoControlCode);
-       release_sock_fd( s, fd );
        WSASetLastError(WSAEOPNOTSUPP);
        return SOCKET_ERROR;
    }
 
-   /* Function executed with no errors */
-   release_sock_fd( s, fd );
    return 0;
 }