insert: only error-out for identical PU or NUMA nodes with different os_index
insert: only error-out for identical PU or NUMA nodes with different os_index

Don't merge os_index before checking the difference, otherwise it's dead-code.
Only care about PU and NUMA nodes' os_index. Others do not matter much,
we can merge things with different os_indexes.

shekkbuilder/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc