message: RenderTarget: fix NPE when depth is not present.
  This fixes a recent regression that would occur when a RenderTarget
  does not have a depth attachment.
diff: @@ -109,7 +109,7 @@ FRenderTarget::HwHandle FRenderTarget::createHandle(FEngine& engine, const Build
  auto dtexture = depth.texture ? upcast(depth.texture)->getHwHandle() : TextureHandle();
  const TargetBufferInfo dinfo =
  - upcast(depth.texture)->getTarget() == Texture::Sampler::SAMPLER_CUBEMAP ?
  + depth.texture && upcast(depth.texture)->getTarget() == Texture::Sampler::SAMPLER_CUBEMAP ?
  TargetBufferInfo(dtexture, depth.mipLevel, depth.face) :
  TargetBufferInfo(dtexture, depth.mipLevel, depth.layer);
  