Correcting bad file header.
Correcting bad file header.

RoaringBitmap/RoaringBitmap,lemire/RoaringBitmap,gssiyankai/RoaringBitmap,okrische/RoaringBitmap,okrische/RoaringBitmap,lemire/RoaringBitmap,RoaringBitmap/RoaringBitmap,lemire/RoaringBitmap,RoaringBitmap/RoaringBitmap,okrische/RoaringBitmap,gssiyankai/RoaringBitmap,lemire/RoaringBitmap,gssiyankai/RoaringBitmap,RoaringBitmap/RoaringBitmap