update avalonia.native to fix crashing on close.
MODIFY
WalletWasabi.Gui/WalletWasabi.Gui.csproj
WalletWasabi.Gui/WalletWasabi.Gui.csproj
<ItemGroup>
<PackageReference Include="Avalonia.Desktop" />
- <PackageReference Include="Avalonia.Native" Version="0.7.0-build4201810121" />
+ <PackageReference Include="Avalonia.Native" Version="0.7.0-build4201810154" />
</ItemGroup>
<ItemGroup>

update avalonia.native to fix crashing on close.