Fix ipv6.c build breakage on Windows.

Change on 2014/12/11 by jtattermusch <jtattermusch@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=81910401

Makefile

@@ -750,7 +750,7 @@ clean_libgrpc:
 
 LIBGRPC_TEST_UTIL_SRC = \
     test/core/util/grpc_profiler.c \
-    test/core/util/ipv6.c \
+    test/core/util/ipv6_posix.c \
     test/core/util/parse_hexstring.c \
     test/core/util/port_posix.c \
     test/core/util/slice_splitter.c \

build.json

@@ -271,7 +271,7 @@
       "vs_project_guid": "{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}",
       "src": [
         "test/core/util/grpc_profiler.c",
-        "test/core/util/ipv6.c",
+        "test/core/util/ipv6_posix.c",
         "test/core/util/parse_hexstring.c",
         "test/core/util/port_posix.c",
         "test/core/util/slice_splitter.c",

test/core/util/ipv6_posix.c

@@ -31,6 +31,9 @@
  *
  */
 
+#include <grpc/support/port_platform.h>
+#ifdef GPR_POSIX_SOCKET
+
 #include "test/core/util/ipv6.h"
 
 #include <netinet/in.h>
@@ -53,3 +56,5 @@ int grpc_ipv6_loopback_available() {
   }
   return ok;
 }
+
+#endif  /* GPR_POSIX_SOCKET */

vsprojects/vs2013/grpc_test_util.vcxproj

@@ -77,7 +77,7 @@
   <ItemGroup>
     <ClCompile Include="..\..\test\core\util\grpc_profiler.c">
     </ClCompile>
-    <ClCompile Include="..\..\test\core\util\ipv6.c">
+    <ClCompile Include="..\..\test\core\util\ipv6_posix.c">
     </ClCompile>
     <ClCompile Include="..\..\test\core\util\parse_hexstring.c">
     </ClCompile>