data parser BUGFIX leafref node as the target of another leafref
data parser BUGFIX leafref node as the target of another leafref

leafref nodes should be accepted as targets for another leafref.
Schema parsers were fine with that, but the data parser reported the
values as different.

Fixes #78

lukasmacko/libyang,lukasmacko/libyang,PavolVican/libyang,PavolVican/libyang,PavolVican/libyang,PavolVican/libyang,PavolVican/libyang