qsvenc: Fix a typo of FrameRateExtD/FrameRateExtN

Signed-off-by: Zhong Li <zhong.li@intel.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

libavcodec/qsvenc.c

@@ -374,7 +374,7 @@ static int check_enc_param(AVCodecContext *avctx, QSVEncContext *q)
             av_log(avctx, AV_LOG_ERROR, "Selected ratecontrol mode is unsupported\n");
         if (UNMATCH(LowPower))
               av_log(avctx, AV_LOG_ERROR, "Low power mode is unsupported\n");
-        if (UNMATCH(FrameInfo.FrameRateExtN) || UNMATCH(FrameInfo.FrameRateExtN))
+        if (UNMATCH(FrameInfo.FrameRateExtN) || UNMATCH(FrameInfo.FrameRateExtD))
               av_log(avctx, AV_LOG_ERROR, "Current frame rate is unsupported\n");
         if (UNMATCH(FrameInfo.PicStruct))
               av_log(avctx, AV_LOG_ERROR, "Current picture structure is unsupported\n");