Error in SIP transport lookup because of memory alignment problem (thanks Samuel Vinson)

[bennylp]

The key for looking up transport in hash table is declared like this:

struct transport_key
{
    pjsip_transport_type_e  type;
    pj_sockaddr             addr;
};

This causes a problem when the compiler maps type field to char data type and when the addr field starts at transport_key+4, because there are three unitialized bytes between type and addr.

More over, the key length is calculated as sizeof(key.addr) + addr_len, so this would cause the several bytes of the key to be ignored.

Thanks Samuel Vinson <samuelv at users.sourceforge.net> for pointing this out!