Merge pull request #1953 from ethomson/packfile_example

update example to new packfile creation signature

examples/network/index-pack.c

@@ -46,7 +46,7 @@ int index_pack(git_repository *repo, int argc, char **argv)
 		return EXIT_FAILURE;
 	}
 
-	if (git_indexer_new(&idx, ".", NULL, NULL, NULL) < 0) {
+	if (git_indexer_new(&idx, ".", 0, NULL, NULL, NULL) < 0) {
 		puts("bad idx");
 		return -1;
 	}