assigning a component or a script to a dialog control should not results in a crash in
dbgutil-enabled build

Change-Id: I06d11d8d51d0fe8d1b2a7217c51c1dfc8d3f8c97
Reviewed-on: https://gerrit.libreoffice.org/20695Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Oliver Specht <oliver.specht@cib.de>