drm_hwcomposer: CI: Upgrade to clang-13 && clang-tidy-13

+ address new clang-tidy findings.

Signed-off-by: Roman Stratiienko <roman.o.stratiienko@globallogic.com>
diff --git a/drm/DrmFbImporter.cpp b/drm/DrmFbImporter.cpp
index 25f32b7..6f2abe8 100644
--- a/drm/DrmFbImporter.cpp
+++ b/drm/DrmFbImporter.cpp
@@ -124,7 +124,7 @@
 
   if (err != 0) {
     ALOGE("Failed to import prime fd %d ret=%d", bo->prime_fds[0], err);
-    return std::shared_ptr<DrmFbIdHandle>();
+    return {};
   }
 
   auto drm_fb_id_cached = drm_fb_id_handle_cache_.find(first_handle);