PyMOAB get_parent_meshset wrong num_hops

[Kalin Kiesling]

In pymoab/core.pyx, get_parent_meshsets takes the argument num_hops with default value 1, however when the c++ call is actually made, it uses a value of 0 regardless of passed num_hops value.

I have fixed this in my forked repo, but I don’t have permission to make a PR here, hence this issue instead. Fixed line is here (single line change).

[Vijay M]

PR submitted and merged