Fix _hashtable_free() to also free to bloom filter.
Fix _hashtable_free() to also free to bloom filter.

dbaarda/librsync,dbaarda/librsync,librsync/librsync,sourcefrog/librsync,librsync/librsync,dbaarda/librsync,sourcefrog/librsync,sourcefrog/librsync,librsync/librsync,dbaarda/librsync,sourcefrog/librsync,librsync/librsync