Catch ProtocolException in HandleEvaluateAsync (#1360)

* Catch ProtocolException

Catch ProtocolException from GetDebugPropertyFromExpression.
If frames change and then we get a request,
GetDebugPropertyFromException would throw and crash the debug adapter.

This PR catches the exception and sets it to the responder of the
Caller in HandleEvaluateAsync

src/OpenDebugAD7/AD7DebugSession.cs

@@ -2979,6 +2979,8 @@ protected override void HandleCompletionsRequestAsync(IRequestResponder<Completi
 
         protected override void HandleEvaluateRequestAsync(IRequestResponder<EvaluateArguments, EvaluateResponse> responder)
         {
+            try
+            {
             EvaluateArguments.ContextValue context = responder.Arguments.Context.GetValueOrDefault(EvaluateArguments.ContextValue.Unknown);
             int frameId = responder.Arguments.FrameId.GetValueOrDefault(-1);
             string expression = responder.Arguments.Expression;
@@ -3065,6 +3067,13 @@ protected override void HandleEvaluateRequestAsync(IRequestResponder<EvaluateArg
                 VariablesReference = variable.VariablesReference,
                 MemoryReference = memoryReference
             });
+
+            }
+            catch (Exception e)
+            {
+                responder.SetError(new ProtocolException(e.Message));
+                return;
+            }
         }
 
         protected override void HandleReadMemoryRequestAsync(IRequestResponder<ReadMemoryArguments, ReadMemoryResponse> responder)