message: Fix TextureSwizzle conversion helper function
diff: @@ -1021,18 +1021,18 @@ static TextureSwizzle Convert(VkComponentSwizzle src, int i)
  {
  default: RDCWARN("Unexpected component swizzle value %d", (int)src); DELIBERATE_FALLTHROUGH();
  case VK_COMPONENT_SWIZZLE_IDENTITY: break;
  - case VK_COMPONENT_SWIZZLE_ZERO: return TextureSwizzle::Zero; break;
  - case VK_COMPONENT_SWIZZLE_ONE: return TextureSwizzle::One; break;
  - case VK_COMPONENT_SWIZZLE_R: return TextureSwizzle::Red; break;
  - case VK_COMPONENT_SWIZZLE_G: return TextureSwizzle::Green; break;
  - case VK_COMPONENT_SWIZZLE_B: return TextureSwizzle::Blue; break;
  - case VK_COMPONENT_SWIZZLE_A: return TextureSwizzle::Alpha; break;
  + case VK_COMPONENT_SWIZZLE_ZERO: return TextureSwizzle::Zero;
  + case VK_COMPONENT_SWIZZLE_ONE: return TextureSwizzle::One;
  + case VK_COMPONENT_SWIZZLE_R: return TextureSwizzle::Red;
  + case VK_COMPONENT_SWIZZLE_G: return TextureSwizzle::Green;
  + case VK_COMPONENT_SWIZZLE_B: return TextureSwizzle::Blue;
  + case VK_COMPONENT_SWIZZLE_A: return TextureSwizzle::Alpha;
  }
  return TextureSwizzle(uint32_t(TextureSwizzle::Red) + i);
  }
  -static void Convert(TextureSwizzle4 dst, VkComponentMapping src)
  +static void Convert(TextureSwizzle4 &dst, VkComponentMapping src)
  {
  dst.red = Convert(src.r, 0);
  dst.green = Convert(src.g, 1);
  