m_uInt8 not m_nInt8

Change-Id: I54524b6c7c19202bee049b61edc3f8e0a1e4fde0
Reviewed-on: https://gerrit.libreoffice.org/6705
Reviewed-by: Lionel Elie Mamane <lionel@mamane.lu>
Tested-by: Lionel Elie Mamane <lionel@mamane.lu>