Merge branch 'ds/sparse-cone'

Code cleanup. * ds/sparse-cone: Documentation/git-sparse-checkout.txt: fix a typo sparse-checkout: use extern for global variables

Junio C Hamano committed Jan 6, 2020 at 14:17 UTC 0f1930cd1bf18bbd807e31c2c6c97579ee5905c3

No changes.