avfilter: dont crash on filters with NULL instance names.

[ffmpeg] / libavfilter / vf_settb.c

diff --git a/libavfilter/vf_settb.c b/libavfilter/vf_settb.c
index 3e48ac4191946aad5d05d89c6ba871e487773f36..d0ac35c8f2842f59defe05962157f90fc6fda6ad 100644 (file)
--- a/libavfilter/vf_settb.c
+++ b/libavfilter/vf_settb.c
@@ -25,6 +25,7 @@
 
 #include "libavutil/avstring.h"
 #include "libavutil/eval.h"
+#include "libavutil/mathematics.h"
 #include "libavutil/rational.h"
 #include "avfilter.h"
 #include "internal.h"