[PATCH] rpcndr.h: Don't use unnamed struct for NDR_SCONTEXT declaration.

[Jacek Caban]

Fixes C++ warning.

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---

mingw-w64 does the same as this patch. PSDK uses an unnamed struct (but 
cl doesn't emit a warning).

The warning is:

In file included from /home/jacek/wine/wine-git/include/wtypes.h:8:0,
                  from /home/jacek/wine/wine-git/include/winscard.h:22,
                  from /home/jacek/wine/wine-git/include/windows.h:70,
                  from test.cpp:2:
/home/jacek/wine/wine-git/include/rpcndr.h:188:16: warning: 
‘_MIDL_STUB_MESSAGE’ has a field 
‘_MIDL_STUB_MESSAGE::SavedContextHandles’ whose type depends on the type 
‘<unnamed struct>’ which has no linkage [-Wsubobject-linkage]
  typedef struct _MIDL_STUB_MESSAGE
                 ^~~~~~~~~~~~~~~~~~
/home/jacek/wine/wine-git/include/rpcndr.h:491:16: warning: 
‘_SCONTEXT_QUEUE’ has a field ‘_SCONTEXT_QUEUE::ArrayOfObjects’ whose 
type depends on the type ‘<unnamed struct>’ which has no linkage 
[-Wsubobject-linkage]
  typedef struct _SCONTEXT_QUEUE {
                 ^~~~~~~~~~~~~~~

  include/rpcndr.h | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)