hash table BUGFIX use callback instead of memcmp
hash table BUGFIX use callback instead of memcmp

It should do exactly the same thing but probably
because the callback can recast the values into
their actualy types, valgrind is happy, it was not before.

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