This check is essentially validating that the hardcoded state_table[]
has reasonable values for the shader constant states. Use ARRAY_SIZE()
to avoid warnings if the compiler chooses an unsigned integer to back
enum SHADER_CONSTANT_TYPE.

Based on an idea by Henri Verbeet.
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>