src/seat.c: provide NULL fallback for output name

This fixes a warning when doing a release build.

diff --git a/src/seat.c b/src/seat.c
index 95b8db8434c61a271b2bb7096c18ec5cce8316d8..e574d291cdbd3662ee6101e99daffb52cdc06897 100644 (file)
--- a/src/seat.c
+++ b/src/seat.c
@@ -282,7 +282,7 @@ map_touch_to_output(struct seat *seat, struct wlr_input_device *dev)
        }
 
        char *output_name = touch->output_name ? touch->output_name : touch_config_output_name;
-       wlr_log(WLR_INFO, "map touch to output %s\n", output_name);
+       wlr_log(WLR_INFO, "map touch to output %s\n", output_name ? output_name : "unknown");
        map_input_to_output(seat, dev, output_name);
 }