Michael Stefaniuc : iphlpapi: Don't crash when enumerating PtP interfaces.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0bbce793c315018ff20e10fcfa742d937f0f8e28
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0bbce793c315018ff20e10fcfa742d937f0f8e28

Author: Michael Stefaniuc <mstefani at redhat.de>
Date:   Tue Mar 16 01:09:40 2010 +0100

iphlpapi: Don't crash when enumerating PtP interfaces.

---

 dlls/iphlpapi/ifenum.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/dlls/iphlpapi/ifenum.c b/dlls/iphlpapi/ifenum.c
index 8653454..5a3db75 100644
--- a/dlls/iphlpapi/ifenum.c
+++ b/dlls/iphlpapi/ifenum.c
@@ -807,7 +807,8 @@ ULONG v6addressesFromIndex(DWORD index, SOCKET_ADDRESS **addrs, ULONG *num_addrs
 
     getInterfaceNameByIndex(index, name);
     for (p = ifa, n = 0; p; p = p->ifa_next)
-      if (p->ifa_addr->sa_family == AF_INET6 && !strcmp(name, p->ifa_name))
+      if (p->ifa_addr && p->ifa_addr->sa_family == AF_INET6 &&
+          !strcmp(name, p->ifa_name))
         n++;
     if (n)
     {
@@ -820,7 +821,8 @@ ULONG v6addressesFromIndex(DWORD index, SOCKET_ADDRESS **addrs, ULONG *num_addrs
 
         for (p = ifa, n = 0; p; p = p->ifa_next)
         {
-          if (p->ifa_addr->sa_family == AF_INET6 && !strcmp(name, p->ifa_name))
+          if (p->ifa_addr && p->ifa_addr->sa_family == AF_INET6 &&
+              !strcmp(name, p->ifa_name))
           {
             struct sockaddr_in6 *addr = (struct sockaddr_in6 *)p->ifa_addr;