swaynag: handle wayland-cursor failures

Same as 92244c87dbb8 ("swaybar: handle wayland-cursor failures")
but for swaynag.

Closes: https://github.com/swaywm/sway/issues/7671

1 files changed, 8 insertions, 0 deletions

diff --git a/swaynag/swaynag.c b/swaynag/swaynag.c
index 1b114e28..b45485f7 100644
--- a/swaynag/swaynag.c
+++ b/swaynag/swaynag.c
@@ -153,8 +153,16 @@ static void update_cursor(struct swaynag_seat *seat) {
         }
         pointer->cursor_theme = wl_cursor_theme_load(
                 cursor_theme, cursor_size * swaynag->scale, swaynag->shm);
+        if (!pointer->cursor_theme) {
+                sway_log(SWAY_ERROR, "Failed to load cursor theme");
+                return;
+        }
         struct wl_cursor *cursor =
                 wl_cursor_theme_get_cursor(pointer->cursor_theme, "default");
+        if (!cursor) {
+                sway_log(SWAY_ERROR, "Failed to get default cursor from theme");
+                return;
+        }
         pointer->cursor_image = cursor->images[0];
         wl_surface_set_buffer_scale(pointer->cursor_surface,
                         swaynag->scale);