fix memory leak in encoder_close (#1366)

* fix memory leak in encoder_close

* add &
old-commit-hash: 3b3eebb1373290816f2c49d221883420aabe4d8f

selfdrive/loggerd/encoder.c

@@ -635,6 +635,7 @@ void encoder_close(EncoderState *s) {
     if (s->remuxing) {
       av_write_trailer(s->ofmt_ctx);
       avio_closep(&s->ofmt_ctx->pb);
+      avcodec_free_context(&s->codec_ctx);
       avformat_free_context(s->ofmt_ctx);
     } else {
       fclose(s->of);