mesa/st: increment num_uniforms for hw accel select shaders
this otherwise breaks nir_lower_uniforms_to_ubo() and probably lots of drivers
Fixes: 9b22ab41 ("mesa/st: implement hardware accelerated GL_SELECT")
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this otherwise breaks nir_lower_uniforms_to_ubo() and probably lots of drivers
Fixes: 9b22ab41 ("mesa/st: implement hardware accelerated GL_SELECT")