Make sure freeaddrinfo is always called on failure.

Bug: https://android-review.googlesource.com/#/c/platform/system/core/+/268797/2/libcutils/socket_network_client_unix.c


Test: builds
Signed-off-by: Ivan Maidanski <i.maidanski@samsung.com>
Change-Id: I2d93c8359c3398769d408284f77d56e09713a7f3