avcodec/utils: Add braces to framecount computation

Suggestes-by: ubitux
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/utils.c

@@ -3157,7 +3157,7 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
                                     uint8_t * extradata, int frame_size, int frame_bytes)
 {
     int bps = av_get_exact_bits_per_sample(id);
-    int framecount = ba>0 && frame_bytes / ba>0 ? frame_bytes / ba : 1;
+    int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
 
     /* codecs with an exact constant bits per sample */
     if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)