Minor refactoring in getaddrinfo() to make the code easier to
read and to make handling IPv4 and IPv6 support more equal.
- Move common wait and error handling code to exec_query()
- Use the same check for CONFIG_NET_IPV4 and CONFIG_NET_IPV6
- Add extra sanity check for family before exec_query()
- Do not set errno when return DNS_EAI_ADDRFAMILY
Fix issue with setting port number for all DNS servers.
Signed-off-by: Stig Bjørlykke <stig.bjorlykke@nordicsemi.no>
0f71a130ef