Fix initial modeset

An if branch takes care of the case where the output needs to be turned
off (DPMS'ed or disabled). The other branch needs to unconditionally
enable the output.

output->current_mode is already taken care of in apply_config.

Sorry about that, probably made a bad change by mistake after my DRM testing.

Closes: https://github.com/swaywm/sway/issues/5193

sway/config/output.c

@@ -345,20 +345,17 @@ static void queue_output_config(struct output_config *oc,
 		return;
 	}
 
-	if (!oc) {
-		sway_log(SWAY_DEBUG, "Turning on output %s", wlr_output->name);
-		wlr_output_enable(wlr_output, true);
-
-		if (oc && oc->width > 0 && oc->height > 0) {
-			sway_log(SWAY_DEBUG, "Set %s mode to %dx%d (%f Hz)",
-				wlr_output->name, oc->width, oc->height, oc->refresh_rate);
-			set_mode(wlr_output, oc->width, oc->height,
-				oc->refresh_rate, oc->custom_mode == 1);
-		} else if (!wl_list_empty(&wlr_output->modes)) {
-			struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
-			wlr_output_set_mode(wlr_output, mode);
-		}
-		output->current_mode = wlr_output->pending.mode;
+	sway_log(SWAY_DEBUG, "Turning on output %s", wlr_output->name);
+	wlr_output_enable(wlr_output, true);
+
+	if (oc && oc->width > 0 && oc->height > 0) {
+		sway_log(SWAY_DEBUG, "Set %s mode to %dx%d (%f Hz)",
+			wlr_output->name, oc->width, oc->height, oc->refresh_rate);
+		set_mode(wlr_output, oc->width, oc->height,
+			oc->refresh_rate, oc->custom_mode == 1);
+	} else if (!wl_list_empty(&wlr_output->modes)) {
+		struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
+		wlr_output_set_mode(wlr_output, mode);
 	}
 
 	if (oc && (oc->subpixel != WL_OUTPUT_SUBPIXEL_UNKNOWN || config->reloading)) {