[PATCH] fetch.c: Remove call to parse_object() from process()

The call to parse_object() in process() is not actually needed - if
the object type is unknown, parse_object() will be called by loop();
if the type is known, the object will be parsed by the appropriate
process_*() function.

After this change blobs which exist locally are no longer parsed,
which gives about 2x CPU usage improvement; the downside is that there
will be no warnings for existing corrupted blobs, but detecting such
corruption is the job of git-fsck-objects, not the fetch programs.
Newly fetched objects are still checked for corruption in http-fetch.c
and ssh-fetch.c (local-fetch.c does not seem to do it, but the removed
parse_object() call would not be reached for new objects anyway).

Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Junio C Hamano <junkio@cox.net>

fetch.c

@@ -134,7 +134,6 @@ static int process(struct object *obj)
 	obj->flags |= SEEN;
 
 	if (has_sha1_file(obj->sha1)) {
-		parse_object(obj->sha1);
 		/* We already have it, so we should scan it now. */
 		obj->flags |= TO_SCAN;
 	} else {