Rob Shearman : rpcrt4: Fix crash in rpcrt4_ncalrpc_parse_top_of_tower due to unconditionally dereferencing networkaddr and endpoint variables .

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 498216fc117b56d605339b4cb368bdc1fca20aeb
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=498216fc117b56d605339b4cb368bdc1fca20aeb

Author: Rob Shearman <robertshearman at gmail.com>
Date:   Sun Aug 10 18:23:40 2008 +0100

rpcrt4: Fix crash in rpcrt4_ncalrpc_parse_top_of_tower due to unconditionally dereferencing networkaddr and endpoint variables.

These can be NULL when parts of the tower are not required.

---

 dlls/rpcrt4/rpc_transport.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/dlls/rpcrt4/rpc_transport.c b/dlls/rpcrt4/rpc_transport.c
index 6e57ee7..9d70088 100644
--- a/dlls/rpcrt4/rpc_transport.c
+++ b/dlls/rpcrt4/rpc_transport.c
@@ -706,9 +706,6 @@ static RPC_STATUS rpcrt4_ncalrpc_parse_top_of_tower(const unsigned char *tower_d
 
     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 
-    *networkaddr = NULL;
-    *endpoint = NULL;
-
     if (tower_size < sizeof(*pipe_floor))
         return EPT_S_NOT_REGISTERED;
 
@@ -720,6 +717,9 @@ static RPC_STATUS rpcrt4_ncalrpc_parse_top_of_tower(const unsigned char *tower_d
         (pipe_floor->count_rhs > tower_size))
         return EPT_S_NOT_REGISTERED;
 
+    if (networkaddr)
+        *networkaddr = NULL;
+
     if (endpoint)
     {
         *endpoint = I_RpcAllocate(pipe_floor->count_rhs);