backend/drm: fix FPE when disabling output

Fixes: 65836ce357 ("backend/drm: log modesetting commits")
Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3534

backend/drm/drm.c

@@ -582,9 +582,13 @@ bool drm_connector_commit_state(struct wlr_drm_connector *conn,
 	}
 
 	if (pending.modeset) {
-		wlr_drm_conn_log(conn, WLR_INFO, "Modesetting with %dx%d @ %.3f Hz",
-			pending.mode.hdisplay, pending.mode.vdisplay,
-			(float)calculate_refresh_rate(&pending.mode) / 1000);
+		if (pending.active) {
+			wlr_drm_conn_log(conn, WLR_INFO, "Modesetting with %dx%d @ %.3f Hz",
+				pending.mode.hdisplay, pending.mode.vdisplay,
+				(float)calculate_refresh_rate(&pending.mode) / 1000);
+		} else {
+			wlr_drm_conn_log(conn, WLR_INFO, "Turning off");
+		}
 	}
 
 	if (!drm_crtc_commit(conn, &pending, flags, false)) {