index-pack: minor fixes to comment and function name
index-pack: minor fixes to comment and function name

Use proper english. Be more exact in one comment.

[jc: I threw in a bit of style clean-up as well]

Signed-off-by: Nicolas Pitre <d659c10e27d52b00987b65e85d99bce5480adcae@cam.org>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git