options: plug leak (triggered by next test)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

lightningd/options.c

@@ -652,7 +652,7 @@ static void opt_parse_from_config(struct lightningd *ld, bool early)
 	lines = tal_strsplit(contents, contents, "\r\n", STR_NO_EMPTY);
 
 	/* We have to keep all_args around, since opt will point into it */
-	all_args = tal_arr(ld, char *, tal_count(lines) - 1);
+	all_args = notleak(tal_arr(ld, char *, tal_count(lines) - 1));
 
 	for (i = 0; i < tal_count(lines) - 1; i++) {
 		if (strstarts(lines[i], "#")) {