lavfi/subtitles: fix memleak after 6bcb1e1a

Spotted-by: James Almer <jamrial@gmail.com>

diff --git a/libavfilter/vf_subtitles.c b/libavfilter/vf_subtitles.c
index 5c3cffbe80638a0177cfd269a92d401f3bff4bcc..c7c82b75c689b680ea83caa1d764ba765526ffcb 100644 (file)
--- a/libavfilter/vf_subtitles.c
+++ b/libavfilter/vf_subtitles.c
@@ -478,6 +478,7 @@ end:
     av_dict_free(&codec_opts);
     if (dec_ctx)
         avcodec_close(dec_ctx);
+    avcodec_free_context(&dec_ctx);
     if (fmt)
         avformat_close_input(&fmt);
     return ret;