[FFmpeg-cvslog] avfilter/vf_drawtext: Check return code of load_glyph()

[Michael Niedermayer]

ffmpeg | branch: release/3.0 | Michael Niedermayer <michael at niedermayer.cc> | Sun Apr 24 12:30:20 2016 +0200| [f2e9e4757f7d02ff84018138577b2321e123b6a9] | committer: Michael Niedermayer

avfilter/vf_drawtext: Check return code of load_glyph()

Fixes segfault
Fixes Ticket5347

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 2e67a99fbc6b99315925de40fc6fa7161576be10)

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f2e9e4757f7d02ff84018138577b2321e123b6a9
---

 libavfilter/vf_drawtext.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavfilter/vf_drawtext.c b/libavfilter/vf_drawtext.c
index 1ef3ecb..65c2c58 100644
--- a/libavfilter/vf_drawtext.c
+++ b/libavfilter/vf_drawtext.c
@@ -1222,7 +1222,9 @@ static int draw_text(AVFilterContext *ctx, AVFrame *frame,
         dummy.code = code;
         glyph = av_tree_find(s->glyphs, &dummy, glyph_cmp, NULL);
         if (!glyph) {
-            load_glyph(ctx, &glyph, code);
+            ret = load_glyph(ctx, &glyph, code);
+            if (ret < 0)
+                return ret;
         }
 
         y_min = FFMIN(glyph->bbox.yMin, y_min);