If we are traversing trees during a "--objects"
traversal, we may skip blobs if the "blob_objects" field of
rev_info is not set. But we do so as the first thing in
process_blob(), only after we have actually created the
"struct blob" object, incurring a hash lookup. We can
optimize out this no-op call completely.

This does not actually affect any current code, as all of
the current traversals always set blob_objects when looking
at objects, anyway.

Signed-off-by: Jeff King <p...@peff.net>
 list-objects.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/list-objects.c b/list-objects.c
index c8c3463..77e6ec5 100644
--- a/list-objects.c
+++ b/list-objects.c
@@ -116,7 +116,7 @@ static void process_tree(struct rev_info *revs,
                        process_gitlink(revs, entry.sha1,
                                        show, &me, entry.path,
-               else
+               else if (revs->blob_objects)
                                     show, &me, entry.path,

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