and make WW8PLCFx_PCDAttrs store a reference to the vector in
WW8ScannerBase rather than storing pointers to the data() inside a
vector. yuck.

Change-Id: I1a74a0f9cd9bf4669a7e49e2a56282d49be834cb
Reviewed-on: https://gerrit.libreoffice.org/58023
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>