fdo#35981: Handle empty members correctly during field popup.
fdo#35981: Handle empty members correctly during field popup.

Or else filtering of field members will not work correctly when the
field contains an empty name.

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