Merge commit '8a96df7b70be509dae9ceec82d2c10a20361356d'

* commit '8a96df7b70be509dae9ceec82d2c10a20361356d':
  matroska: fix a corner case in ebml-lace parsing

Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/matroskadec.c

@@ -2025,7 +2025,7 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,
 
     case 0x3: /* EBML lacing */ {
         uint64_t num;
-        uint32_t total;
+        uint64_t total;
         n = matroska_ebmlnum_uint(matroska, data, size, &num);
         if (n < 0) {
             av_log(matroska->ctx, AV_LOG_INFO,