Ticket #415: implement IPv6 support in PJLIB

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@1585 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/src/pj/sock_common.c b/pjlib/src/pj/sock_common.c
index 4431f59..5b629fc 100644
--- a/pjlib/src/pj/sock_common.c
+++ b/pjlib/src/pj/sock_common.c
@@ -18,6 +18,11 @@
  */
 #include <pj/sock.h>
 
+PJ_DEF(pj_uint16_t) pj_AF_UNSPEC(void)
+{
+    return PJ_AF_UNSPEC;
+}
+
 PJ_DEF(pj_uint16_t) pj_AF_UNIX(void)
 {
     return PJ_AF_UNIX;