[pango] Bring back unknown glyph size defines

[Matthias Clasen <matthiasc src gnome org>]

commit f9ea5ab615c14b403f61ddb0ed8636f84e030b42
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jul 24 11:21:33 2019 -0400

    Bring back unknown glyph size defines
    
    These turned out to be used in a number of places,
    so just deprecate them for now.

 pango/pango-font-private.h | 6 ------
 pango/pango-font.h         | 4 ++++
 2 files changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/pango/pango-font-private.h b/pango/pango-font-private.h
index 8817bc02..fb496a96 100644
--- a/pango/pango-font-private.h
+++ b/pango/pango-font-private.h
@@ -179,12 +179,6 @@ struct _PangoFontClass
   hb_font_t *           (*create_hb_font)     (PangoFont      *font);
 };
 
-/* used for very rare and miserable situtations that we cannot even
- * draw a hexbox
- */
-#define PANGO_UNKNOWN_GLYPH_WIDTH  10
-#define PANGO_UNKNOWN_GLYPH_HEIGHT 14
-
 
 G_END_DECLS
 
diff --git a/pango/pango-font.h b/pango/pango-font.h
index ec4a7dea..13730fa5 100644
--- a/pango/pango-font.h
+++ b/pango/pango-font.h
@@ -540,6 +540,10 @@ hb_font_t *           pango_font_get_hb_font       (PangoFont        *font);
 #define PANGO_GLYPH_UNKNOWN_FLAG    ((PangoGlyph)0x10000000)
 #define PANGO_GET_UNKNOWN_GLYPH(wc) ((PangoGlyph)(wc)|PANGO_GLYPH_UNKNOWN_FLAG)
 
+#ifndef PANGO_DISABLE_DEPRECATED
+#define PANGO_UNKNOWN_GLYPH_WIDTH  10
+#define PANGO_UNKNOWN_GLYPH_HEIGHT 14
+#endif
 
 G_END_DECLS