r=gordon. 23709. Adding an extra check before trying to memcpy hostent data, this should fix the crashing we've been seeing on some win95 boxes, but it doesn't fix the problem of not having any A entries in DNS

netwerk/base/src/nsSocketTransport.cpp

@@ -1460,7 +1460,8 @@ nsSocketTransport::OnFound(nsISupports *aContext,
   nsAutoLock lock(mLock);
   nsresult rv = NS_OK;
 
-  if (aHostEnt->hostEnt.h_addr_list) {
+  if (aHostEnt->hostEnt.h_addr_list
+      && aHostEnt->hostEnt.h_addr_list[0]) {
     memcpy(&mNetAddress.inet.ip, aHostEnt->hostEnt.h_addr_list[0], 
            sizeof(mNetAddress.inet.ip));