Fix: these headers may not always be there.
Fix: these headers may not always be there.

wffurr/osmium,wffurr/osmium,osmium-org/osmium,copyliu/osmium,copyliu/osmium,wffurr/osmium,osmium-org/osmium,osmium-org/osmium,osmium-org/osmium,copyliu/osmium,wffurr/osmium