CLN : Update super usage in two more places
CLN : Update super usage in two more places

These two uses of super needed clarification, which was provided in the
PR review

	modified:   tables/indexesextension.pyx

FrancescAlted/PyTables,avalentino/PyTables,avalentino/PyTables,FrancescAlted/PyTables,PyTables/PyTables,avalentino/PyTables,FrancescAlted/PyTables,PyTables/PyTables,PyTables/PyTables