Accept empty contours in glyphs

* src/sfnt.c (sfnt_decompose_glyph_1, sfnt_decompose_glyph_2):
Accept empty contours, for they are not invalid, just redundant.

(cherry picked from commit 22da40a5e5057c2cdea2f54f1ac590ddc9d831cb)

diff --git a/src/sfnt.c b/src/sfnt.c
index eb3add7390e88bad796ff52ac9bcfd24b7d49985..4d377ddf5e565813810c88a35d2c8c9e8653df67 100644 (file)
--- a/src/sfnt.c
+++ b/src/sfnt.c
@@ -3088,7 +3088,8 @@ sfnt_decompose_glyph_1 (size_t here, size_t last,
   /* The contour is empty.  */
 
   if (here == last)
-    return 1;
+    /* An empty contour, if redundant, is not necessarily invalid.  */
+    return 0;
 
   /* Move the pen to the start of the contour.  Apparently some fonts
      have off the curve points as the start of a contour, so when that
@@ -3227,7 +3228,8 @@ sfnt_decompose_glyph_2 (size_t here, size_t last,
   /* The contour is empty.  */
 
   if (here == last)
-    return 1;
+    /* An empty contour, if redundant, is not necessarily invalid.  */
+    return 0;
 
   /* Move the pen to the start of the contour.  Apparently some fonts
      have off the curve points as the start of a contour, so when that