Fix a regression in get_file_image (segfault on Mac OSX)
Fix a regression in get_file_image (segfault on Mac OSX)

andreabedini/PyTables,jack-pappas/PyTables,jack-pappas/PyTables,gdementen/PyTables,cpcloud/PyTables,rabernat/PyTables,FrancescAlted/PyTables,tp199911/PyTables,tp199911/PyTables,rabernat/PyTables,mohamed-ali/PyTables,dotsdl/PyTables,joonro/PyTables,jennolsen84/PyTables,PyTables/PyTables,andreabedini/PyTables,tp199911/PyTables,avalentino/PyTables,gdementen/PyTables,gdementen/PyTables,joonro/PyTables,PyTables/PyTables,dotsdl/PyTables,cpcloud/PyTables,gdementen/PyTables,rabernat/PyTables,jennolsen84/PyTables,tp199911/PyTables,jack-pappas/PyTables,jennolsen84/PyTables,avalentino/PyTables,rdhyee/PyTables,jack-pappas/PyTables,mohamed-ali/PyTables,andreabedini/PyTables,rabernat/PyTables,rdhyee/PyTables,PyTables/PyTables,joonro/PyTables,cpcloud/PyTables,avalentino/PyTables,mohamed-ali/PyTables,rdhyee/PyTables,dotsdl/PyTables,joonro/PyTables,jennolsen84/PyTables,jack-pappas/PyTables,cpcloud/PyTables,FrancescAlted/PyTables,rdhyee/PyTables,andreabedini/PyTables,mohamed-ali/PyTables,FrancescAlted/PyTables,dotsdl/PyTables