user: Dead code fix (Coverity)

[Andrew Talbot]

These shadow declarations of aSrv, aTpc are undermining the function-wide
versions.

-- Andy.
---
Changelog:
    user: Dead code fix (Coverity CID-25).

diff -urN a/dlls/user/dde_client.c b/dlls/user/dde_client.c
--- a/dlls/user/dde_client.c	2006-10-02 21:39:02.000000000 +0100
+++ b/dlls/user/dde_client.c	2006-10-14 14:59:09.000000000 +0100
@@ -254,7 +254,6 @@
 	{
 	    HWND	hwndClient = pConv->hwndClient;
 	    HWND	hwndServer = pConv->hwndServer;
-	    ATOM	aSrv, aTpc;
 
 	    SetWindowLongPtrW(pConv->hwndClient, GWL_WDML_CONVERSATION, 0);