Requested frame does not exists exception is thrown on clearing Audio frame data.

Steps to repro:
1. Create a new Project.
2. Windows > Analysis > Profiler.
3. Enter the Play mode.
4. Select the Audio frame.
5. Clear the Profiler data.

Actual Result:
Error is thrown in the console.

Expected Result:
No error in the console.

Reproducible in:
2019.3.0f4 (e5c8d37da131).

Working Fine in:
2020.1.0a17, 2019.3.0f3 (d719fa0632c6).

Environment:
Occurs only on Windows.

Stack trace:
Requested frame does not exists
UnityEditorInternal.ProfilerProperty:SetRoot(Int32, Int32, Int32)
UnityEditor.ProfilerWindow:CreateProperty()
UnityEditorInternal.Profiling.AudioProfilerModule:DrawView(Rect)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)