Fix fdo#44040 VIEWING: Crash when page preview after <f4> (data sources)
Fix fdo#44040 VIEWING: Crash when page preview after <f4> (data sources)

Caolán fixed Iterator management which was buggy. (thank you !)

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