st/nine: Return E_FAIL for unused vertexdeclaration type

Add returncode E_FAIL.
Return E_FAIL for any vertexdeclaration element with type unused.

Reviewed-by: Axel Davy <axel.davy@ens.fr>
Signed-off-by: Patrick Rudolph <siro@das-labor.org>

include/D3D9/d3d9types.h

@@ -50,6 +50,7 @@
 #define E_OUTOFMEMORY MAKE_HRESULT(1, 0x007, 14)
 #define E_NOINTERFACE MAKE_HRESULT(1, 0x000, 0x4002)
 #define E_POINTER     MAKE_HRESULT(1, 0x000, 0x4003)
+#define E_FAIL        MAKE_HRESULT(1, 0x000, 0x4005)
 
 #define S_OK          ((HRESULT)0)
 #define S_FALSE       ((HRESULT)1)

src/gallium/state_trackers/nine/vertexdeclaration9.c

@@ -181,10 +181,11 @@ NineVertexDeclaration9_ctor( struct NineVertexDeclaration9 *This,
     HRESULT hr = NineUnknown_ctor(&This->base, pParams);
     if (FAILED(hr)) { return hr; }
 
+    /* wine */
     for (This->nelems = 0;
-         pElements[This->nelems].Type != D3DDECLTYPE_UNUSED &&
-         pElements[This->nelems].Stream != 0xFF; /* wine */
-         ++This->nelems);
+         pElements[This->nelems].Stream != 0xFF;
+         ++This->nelems)
+        user_assert(pElements[This->nelems].Type != D3DDECLTYPE_UNUSED, E_FAIL);
 
     caps = NineDevice9_GetCaps(This->base.device);
     user_assert(This->nelems <= caps->MaxStreams, D3DERR_INVALIDCALL);