move EnableTargetAsyncOption

this should work now, see #794

Author: Trass3r

src/MIDebugEngine/Engine.Impl/DebuggedProcess.cs

@@ -571,7 +571,6 @@ public async Task Initialize(HostWaitLoop waitLoop, CancellationToken token)
 
             try
             {
-                await this.MICommandFactory.EnableTargetAsyncOption();
                 List<LaunchCommand> commands = await GetInitializeCommands();
                 _childProcessHandler?.Enable();
 
@@ -620,6 +619,8 @@ public async Task Initialize(HostWaitLoop waitLoop, CancellationToken token)
                 }
                 // now the exe is loaded and we can check target features
                 TargetFeatures = await MICommandFactory.GetTargetFeatures();
+                if (TargetFeatures.Contains("async"))
+                    await MICommandFactory.EnableTargetAsyncOption();
 
                 success = true;
             }