[sr-dev] crash at startup when listening address does not exist

[Juha Heinanen]

i noticed that sr master version crashes at startup if a listening
address does not exist:

May  3 10:19:43 sip /usr/sbin/sip-proxy[27907]: ERROR: <core> [udp_server.c:400]: ERROR: udp_init: bind(8, 0xb7210490, 16) on 192.98.102.10: Cannot assign requested address
May  3 10:19:43 sip kernel: [189745.416438] sip-proxy[27907]: segfault at 786e6570 ip b767ce38 sp bf85f67c error 4 in libc-2.11.2.so[b760a000+140000]
May  3 10:19:43 sip sip-proxy: ERROR: <core> [daemonize.c:307]: Main process exited before writing to pipe

-- juha