Test data before using it.
Test data before using it.

Of course, libdialog is still chock-full of similar bugs, but it's been
multiple years and no one has any better suggestions so the bugs will just
be dealt with case-by-case.

PR:	28221

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase