message: Handle NULL/out of bounds vertex buffer data in D3D11 shader debugging
diff: @@ -1977,7 +1977,7 @@ ShaderDebugTrace *D3D11Replay::DebugVertex(uint32_t eventId, uint32_t vertid, ui
  }
  else
  {
  - if(size_t(fmt.compByteWidth * fmt.compCount) > dataSize)
  + if(srcData == NULL || size_t(fmt.compByteWidth * fmt.compCount) > dataSize)
  {
  state.inputs[i].value.u.x = state.inputs[i].value.u.y = state.inputs[i].value.u.z = 0;
  if(fmt.compType == CompType::UInt || fmt.compType == CompType::SInt)
  