Related: fdo#55570 presumably we can attempt the insert...
Related: fdo#55570 presumably we can attempt the insert...

and rely that it won't replace the original on pre-existing key and use the
usual .second == true flag rather than lookup and then insert on
non-pre-existing key

Change-Id: Idba65bfb2efaa5812b965a8811ff425f0b0939d8

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