interface with COMBOBOX_... instead of LISTBOX_...

... even if it is the same value.

Change-Id: I62f81d181f25723cba5ca0fbfb395539385a007a
+sal_Int32 ComboBox::GetEntryPos( const void* pData ) const

Change-Id: I9199da366eb70e818e1d85823cd7cf530f70167d
userinterface and currencylb are just ListBox, so GtkComboBoxText

... and not the bells and whistles SvxLanguageBox.

Change-Id: Icaeaeead0bd58bc05d2a9af4e9b7265de1647936
resolved fdo#78718 break the indefinite loop when entering ="

... introduced with the refactoring of
5a14766061f75e88791dc3134c9ec56e198144e2

Change-Id: Ic322c58cad749d136966cee08ca5a06be59897b7