d3dx9: Introduce d3dx_shader_get_ctab_constant() function and use it instead of ID3DXConstantTableImpl_GetConstantDesc().
Signed-off-by: Paul Gofman <gofmanp@gmail.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>