lavc/libkvazaar: fix framerate setting

fix framerate setting.

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>

libavcodec/libkvazaar.c

@@ -80,13 +80,8 @@ static av_cold int libkvazaar_init(AVCodecContext *avctx)
     cfg->height = avctx->height;
 
     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
-        if (avctx->ticks_per_frame > INT_MAX / avctx->framerate.den) {
-            av_log(avctx, AV_LOG_ERROR,
-                   "Could not set framerate for kvazaar: integer overflow\n");
-            return AVERROR(EINVAL);
-        }
         cfg->framerate_num   = avctx->framerate.num;
-        cfg->framerate_denom = avctx->time_base.den * avctx->ticks_per_frame;
+        cfg->framerate_denom = avctx->framerate.den;
     } else {
         if (avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
             av_log(avctx, AV_LOG_ERROR,