avformat/utils: Check bps before using it in a shift in ff_get_pcm_codec_id()

Fixes undefined shift
Fixes: usan_shift

Found-by: Thomas Guilbert <tguilbert@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/utils.c

@@ -2955,6 +2955,9 @@ enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
 
 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
 {
+    if (bps > 64U)
+        return AV_CODEC_ID_NONE;
+
     if (flt) {
         switch (bps) {
         case 32: