Completed TODO: simplify appending to sequence.
Completed TODO: simplify appending to sequence.

File sfx2/source/appl/appopen.cxx. Fixed by using std::vector instead of
Sequence; Simplifying the code.

Change-Id: Iecb45ba3429be86d03fad5275d0f0a92b659a542
Reviewed-on: https://gerrit.libreoffice.org/13605
Reviewed-by: Caolán McNamara <301f5784f9f6aac04077f24f1e5abc31af69d401@redhat.com>
Tested-by: Caolán McNamara <301f5784f9f6aac04077f24f1e5abc31af69d401@redhat.com>

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