Crash window when hover over record struct name

[PetSerAl]

Steps to reproduce

record struct S();

2. Hover over type name S

Error message shown

Sorry, we crashed
---------------------------
System.Exception: Invalid value for ClassType
   at ICSharpCode.Decompiler.CSharp.OutputVisitor.CSharpAmbience.ConvertSymbol(ISymbol symbol, TokenWriter writer, CSharpFormattingOptions formattingPolicy) in /_/ICSharpCode.Decompiler/CSharp/OutputVisitor/CSharpAmbience.cs:line 87
   at ICSharpCode.ILSpy.CSharpLanguage.GetRichTextTooltip(IEntity entity)
   at ICSharpCode.ILSpy.TextView.DecompilerTextView.CreateTooltipForEntity(IEntity resolved)
   at ICSharpCode.ILSpy.TextView.DecompilerTextView.GenerateTooltip(ReferenceSegment segment)
   at ICSharpCode.ILSpy.TextView.DecompilerTextView.TextViewMouseHover(Object sender, MouseEventArgs e)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.Threading.DispatcherTimer.FireTick()
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

Details

• Product in use: ILSpy
• Version in use: 8.0.0.7246-preview3