d3d8: Initialize the vertex decl when allocating it.

dlls/d3d8/vertexdeclaration.c

@@ -284,7 +284,7 @@ size_t convert_to_wined3d_declaration(const DWORD *d3d8_elements, DWORD *d3d8_el
     TRACE("d3d8_elements %p, wined3d_elements %p\n", d3d8_elements, wined3d_elements);
 
     /* 128 should be enough for anyone... */
-    *wined3d_elements = HeapAlloc(GetProcessHeap(), 0, 128 * sizeof(WINED3DVERTEXELEMENT));
+    *wined3d_elements = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 128 * sizeof(WINED3DVERTEXELEMENT));
     while (D3DVSD_END() != *token)
     {
         token_type = ((*token & D3DVSD_TOKENTYPEMASK) >> D3DVSD_TOKENTYPESHIFT);