message: Fix uint/int cast compile error
diff: @@ -49,9 +49,9 @@ void main()
  {
  ivec2 quad = ivec2(gl_FragCoord.xy*0.5f);
  - uint overdraw = 0;
  - for(uint i = 0; i < 4; i++)
  - overdraw += imageLoad(overdrawImage, ivec3(quad, i)).x/(i + 1);
  + uint overdraw = 0u;
  + for(uint i = 0u; i < 4u; i++)
  + overdraw += imageLoad(overdrawImage, ivec3(quad, i)).x/(i + 1u);
  color_out = ToColour(overdraw);
  }
  