tree dc0549ee90277994b81da7f87c697ea9d258dec4
parent 4009713946a79c933fd03593c80b65f29a5c9b6e
author Jonathan Nieder <jrn@google.com> 1446619425 -0800
committer Jonathan Nieder <jrn@google.com> 1446763907 -0800

Convert remaining callers of BitmapBuilder.add to use .addObject

When setupTipCommitBitmaps is called, writeBitmaps does not have any
bitmaps saved, so these calls to .add always add a single commit and
do not OR in a bitmap.

The objects returned by nextObject after a commit walk is finished
are trees and blobs.  Non-commit objects do not have bitmaps
associated so the call to .add also can only add a single object.

Change-Id: I7b816145251a7fa4f1fffe0d03644257ea7f5440