libtirpc: fix crash with tuntap devices
libtirpc: fix crash with tuntap devices

Linux tuntap devices and other virtual network devices, if not
configured, will be reported by getifaddrs() with a NULL ifa_addr
pointer. __rpc_getifaddrs would trip over that, because it derefenced
the ifa_addr pointer without checking.

Signed-off-by: Olaf Kirch <ce329f9cb2f25c995acda33ae440b834590f4e80@suse.de>
Signed-off-by: Steve Dickson <305cc9d5027c0f4e08c2697d4cabde07a8221669@redhat.com>

Distrotech/libtirpc,Distrotech/libtirpc,Distrotech/libtirpc