HtmlTextview: Fix warning regarding TargetList on destroy

3 jobs for drag-dest-textview in 4 minutes and 45 seconds (queued for 3 minutes and 14 seconds)
Status Job ID Name Coverage
  Test
passed #19998
run-appdata

00:00:06

passed #19997
run-tests

00:04:20

 
  Build
passed #19999
run-build

00:00:18