[pango/fix-glib-dependency] Don't depend on glib 2.60 symbols at runtime

[Alexander Larsson <alexl src gnome org>]

commit ba21a3cb8f70566aac1cc3f5ed63a2d81c609630
Author: Alexander Larsson <alexl redhat com>
Date:   Sun Aug 25 18:43:46 2019 +0300

    Don't depend on glib 2.60 symbols at runtime
    
    The G_TYPE_UNICODE_STRING type was added in 2.60, which broke
    applications using older glib versions (such as matlab).
    The only usecase was a warning message anyway, so we just
    avoid using it.

 pango/pango-context.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/pango/pango-context.c b/pango/pango-context.c
index 99fa454a..a64eb79f 100644
--- a/pango/pango-context.c
+++ b/pango/pango-context.c
@@ -1488,17 +1488,19 @@ itemize_state_process_run (ItemizeState *state)
         {
           /* If no font was found, warn once per fontmap/script pair */
           PangoFontMap *fontmap = state->context->font_map;
-          const char *script_name = g_enum_to_string (G_TYPE_UNICODE_SCRIPT, state->script);
+          char *script_tag = g_strdup_printf ("g-unicode-script-%d", state->script);
 
-          if (!g_object_get_data (G_OBJECT (fontmap), script_name))
+          if (!g_object_get_data (G_OBJECT (fontmap), script_tag))
             {
-              g_warning ("failed to choose a font, expect ugly output. script='%s'",
-                         script_name);
+              g_warning ("failed to choose a font, expect ugly output. script='%d'",
+                         state->script);
 
-              g_object_set_data_full (G_OBJECT (fontmap), script_name,
+              g_object_set_data_full (G_OBJECT (fontmap), script_tag,
                                       GINT_TO_POINTER (1), NULL);
             }
 
+          g_free (script_tag);
+
           font = NULL;
         }
       itemize_state_fill_font (state, font);