shithub: libvpx

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Fix ubsan warning: vp9_cx_iface.c

BUG=https://bugs.chromium.org/p/webm/issues/detail?id=1219

Change-Id: I77584af8b9e25db484d9ced6013da3163a9592c0

--- a/vp9/vp9_cx_iface.c

+++ b/vp9/vp9_cx_iface.c

@@ -978,7 +978,7 @@

 static int64_t ticks_to_timebase_units(const vpx_rational_t *timebase,

                                        int64_t n) {

-  const int64_t round = TICKS_PER_SEC * timebase->num / 2 - 1;

+  const int64_t round = (int64_t)TICKS_PER_SEC * timebase->num / 2 - 1;

   return (n * timebase->den + round) / timebase->num / TICKS_PER_SEC;

 }