fix: don't leak memory...

There's still memory being leaked by the wayland stuff

src/battery.c

@@ -20,6 +20,7 @@ char
   f = fopen(d, "r");
   if (!f) {
     log_fatal("battery directory does not exist");
+    free(d);
     return NULL;
   }
   free(d);

src/config.c

@@ -107,4 +107,6 @@ parse_config_file(char *path)
 	set_int_conf(led_blink_trigger_level, led_blink, "power_source");
 	set_str_conf(led_blink_timing_formula, led_blink, "timing_formula");
 	set_str_conf(acpi_daemon_socket_path, acpi_daemon, "socket_path");
+
+  toml_free(config);
 }