Merge branch 'jk/rev-list-verify-objects-fix'

"git rev-list --verify-objects" ought to inspect the contents of
objects and notice corrupted ones, but it didn't when the commit
graph is in use, which has been corrected.

* jk/rev-list-verify-objects-fix:
  rev-list: disable commit graph with --verify-objects
  lookup_commit_in_graph(): use prepare_commit_graph() to check for graph

revision.c

@@ -2418,6 +2418,7 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
 		revs->tree_objects = 1;
 		revs->blob_objects = 1;
 		revs->verify_objects = 1;
+		disable_commit_graph(revs->repo);
 	} else if (!strcmp(arg, "--unpacked")) {
 		revs->unpacked = 1;
 	} else if (starts_with(arg, "--unpacked=")) {