cafdec: check for eof in read_info_chunk()

Fixes Ticket #3864
Found-by: Piotr Bandurski <ami_stuff@o2.pl>
Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavformat/cafdec.c

@@ -205,7 +205,7 @@ static void read_info_chunk(AVFormatContext *s, int64_t size)
     AVIOContext *pb = s->pb;
     unsigned int i;
     unsigned int nb_entries = avio_rb32(pb);
-    for (i = 0; i < nb_entries; i++) {
+    for (i = 0; i < nb_entries && !avio_feof(pb); i++) {
         char key[32];
         char value[1024];
         avio_get_str(pb, INT_MAX, key, sizeof(key));