fix misc memory leaks

This fixes a few misc memory leaks reported by asan:
- Items of `config->config_chain` are now freed instead of just the list
itself
- `bar->swaybar_command` is now freed
- The result returned by a seat subcommand is now returned instead of
leaked

1 files changed, 1 insertions, 1 deletions

diff --git a/sway/commands/seat.c b/sway/commands/seat.c
index 5b23dcc6..aa36ba95 100644
--- a/sway/commands/seat.c
+++ b/sway/commands/seat.c
@@ -50,5 +50,5 @@ struct cmd_results *cmd_seat(int argc, char **argv) {
         }
 
         config->handler_context.seat_config = NULL;
-        return cmd_results_new(CMD_SUCCESS, NULL);
+        return res ? res : cmd_results_new(CMD_SUCCESS, NULL);
 }