Fix (suppress) "file already closed" warning.
Fix (suppress) "file already closed" warning.

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