[newlib-cygwin] Cygwin: document getifaddrs fixes

[Ken Brown]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=f9f1b39180217bd13d8287a13fdd124420bcee9b

commit f9f1b39180217bd13d8287a13fdd124420bcee9b
Author: Ken Brown <kbrown@cornell.edu>
Date:   Wed Jul 28 07:44:25 2021 -0400

    Cygwin: document getifaddrs fixes

Diff:
---
 winsup/cygwin/release/3.2.1 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/winsup/cygwin/release/3.2.1 b/winsup/cygwin/release/3.2.1
index 2a339718c..6cbed79de 100644
--- a/winsup/cygwin/release/3.2.1
+++ b/winsup/cygwin/release/3.2.1
@@ -48,3 +48,6 @@ Bug Fixes
 - Fix nanosleep(2) returning negative rem. NtQueryTimer appears to be able to
   return a negative remaining time (less than the timer resolution) for
   unsignalled timers.
+
+- Fix getifaddrs(3) returning address family 0 or IPv4 address 0.
+  Addresses: https://cygwin.com/pipermail/cygwin/2021-July/248970.html