Disabling test StunPortTest.TestPrepareAddressHostname on WIN.

Test is flaky.

TBR=honghaiz@webrtc.org
NOTRY=True

Bug: webrtc:7309
Change-Id: I3f9b17e2ca37a2c2a0b9233d50fdb928a645b4ce
Reviewed-on: https://webrtc-review.googlesource.com/c/111250
Commit-Queue: Alex Loiko <aleloi@webrtc.org>
Reviewed-by: Alex Loiko <aleloi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25686}
diff --git a/p2p/base/stunport_unittest.cc b/p2p/base/stunport_unittest.cc
index 727e80a..b65cbf7 100644
--- a/p2p/base/stunport_unittest.cc
+++ b/p2p/base/stunport_unittest.cc
@@ -216,7 +216,7 @@
 
 // Test that we can get an address from a STUN server specified by a hostname.
 // Crashes on Linux, see webrtc:7416
-#if defined(WEBRTC_LINUX)
+#if defined(WEBRTC_LINUX) || defined(WEBRTC_WINDOWS)
 #define MAYBE_TestPrepareAddressHostname DISABLED_TestPrepareAddressHostname
 #else
 #define MAYBE_TestPrepareAddressHostname TestPrepareAddressHostname