[freetype2] master 34e4673: [sfnt] Correctly handle missing bitmaps in sbix format (#53404).

[Werner LEMBERG]

branch: master
commit 34e467332b0b5ecb03641540e715202204616139
Author: Ben Wagner <address@hidden>
Commit: Werner Lemberg <address@hidden>

    [sfnt] Correctly handle missing bitmaps in sbix format (#53404).
    
    * src/sfnt/ttfsbit.c (tt_face_load_sbix_image): Fix return value.
---
 ChangeLog         | 6 ++++++
 src/sfnt/ttsbit.c | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 5f415bf..c6ed98d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2018-03-23  Ben Wagner  <address@hidden>
 
+       [sfnt] Correctly handle missing bitmaps in sbix format (#53404).
+
+       * src/sfnt/ttfsbit.c (tt_face_load_sbix_image): Fix return value.
+
+2018-03-23  Ben Wagner  <address@hidden>
+
        [truetype] Fix advance of empty glyphs in bitmap fonts (#53393).
 
        * src/truetype/ttgload.c (TT_Load_Glyph): Apply scaling to metrics
diff --git a/src/sfnt/ttsbit.c b/src/sfnt/ttsbit.c
index 53e6175..33b8640 100644
--- a/src/sfnt/ttsbit.c
+++ b/src/sfnt/ttsbit.c
@@ -1514,7 +1514,7 @@
     FT_FRAME_EXIT();
 
     if ( glyph_start == glyph_end )
-      return FT_THROW( Invalid_Argument );
+      return FT_THROW( Missing_Bitmap );
     if ( glyph_start > glyph_end                     ||
          glyph_end - glyph_start < 8                 ||
          face->ebdt_size - strike_offset < glyph_end )