Fwd: Fix build of IPX on FreeBSD

[David Naylor]

Hi,

FreeBSD defines the following in netipx/ipx.h:

union ipx_net {
        u_char  c_net[4];
        u_short s_net[2];
};

union ipx_net_u {
        union   ipx_net net_e;
        u_long          long_e;
};

struct ipx_addr {
        union ipx_net   x_net;
        union ipx_host  x_host;
        u_short         x_port;
};

struct sockaddr_ipx {
        u_char          sipx_len;
        u_char          sipx_family;
        struct ipx_addr sipx_addr;
        char            sipx_zero[2];
};

Since sockaddr_ipx.sipx_addr.x_net is a union it cannot be used in boolean 
logic, thus breaking the compilation of the latest version of wine on FreeBSD.  
The attached patch fixed this errorin dlls/ws2_32/socket.c on FreeBSD.  

Regards,

David
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