Snippets for appstream-glib 0.8.3 from Alpine loongarch64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-loongarch64/community/appstream-glib/appstream-glib-0.8.3-r0.log.

• ../libappstream-builder/asb-self-test.c:45:1: warning: 'asb_test_compare_lines' defined but not used [-Wunused-function]
     45 | asb_test_compare_lines (const gchar *txt1, const gchar *txt2, GError **error)
        | ^~~~~~~~~~~~~~~~~~~~~~
  

• ../libappstream-builder/asb-self-test.c:28:1: warning: 'asb_test_get_filename' defined but not used [-Wunused-function]
     28 | asb_test_get_filename (const gchar *filename)
        | ^~~~~~~~~~~~~~~~~~~~~
  

• ../libappstream-glib/as-utils.c:1829:9: warning: 'GTimeVal' is deprecated: Use 'GDateTime' instead [-Wdeprecated-declarations]
   1829 |         GTimeVal tv;
        |         ^~~~~~~~
  

• ../libappstream-glib/as-utils.c:1838:17: warning: 'g_time_val_from_iso8601' is deprecated: Use 'g_date_time_new_from_iso8601' instead [-Wdeprecated-declarations]
   1838 |                 if (g_time_val_from_iso8601 (iso_date, &tv) && tv.tv_sec != 0)
        |                 ^~
  

• ../libappstream-glib/as-utils.c:1839:25: warning: 'g_date_time_new_from_timeval_utc' is deprecated: Use 'g_date_time_new_from_unix_utc' instead [-Wdeprecated-declarations]
   1839 |                         return g_date_time_new_from_timeval_utc (&tv);
        |                         ^~~~~~
  

• ../libappstream-glib/as-node.c:1778:22: warning: variable 'data_unlocalized' set but not used [-Wunused-but-set-variable]
   1778 |         AsRefString *data_unlocalized;
        |                      ^~~~~~~~~~~~~~~~