tdf#91073 - don't queue an async user event when disposed.
tdf#91073 - don't queue an async user event when disposed.

Change-Id: Ic0a084fe7392ae5a407a367fb67a5a1837a2ca14

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core