libobs: Call debug marker after null check, not before

libobs/obs-scene.c

@@ -462,14 +462,14 @@ static inline bool item_texture_enabled(const struct obs_scene_item *item)
 
 static void render_item_texture(struct obs_scene_item *item)
 {
-	GS_DEBUG_MARKER_BEGIN(GS_DEBUG_COLOR_ITEM_TEXTURE,
-			      "render_item_texture");
-
 	gs_texture_t *tex = gs_texrender_get_texture(item->item_render);
 	if (!tex) {
 		return;
 	}
 
+	GS_DEBUG_MARKER_BEGIN(GS_DEBUG_COLOR_ITEM_TEXTURE,
+			      "render_item_texture");
+
 	gs_effect_t *effect = obs->video.default_effect;
 	enum obs_scale_type type = item->scale_filter;
 	uint32_t cx = gs_texture_get_width(tex);