loplugin: vclwidgets: make the dispose/destructor checking more robust
loplugin: vclwidgets: make the dispose/destructor checking more robust

Change-Id: I94500963fb28550d664d3547e8f12b7f6fb681ca

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