avio: move ff_crc04C11DB7_update() from avio.h -> avio_internal.h

libavformat/avio.h

@@ -675,8 +675,6 @@ int url_open_dyn_packet_buf(AVIOContext **s, int max_packet_size);
  */
 int url_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer);
 
-unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
-                                    unsigned int len);
 unsigned long get_checksum(AVIOContext *s);
 
 #if FF_API_UDP_GET_FILE

libavformat/avio_internal.h

@@ -77,5 +77,7 @@ int ff_udp_get_local_port(URLContext *h);
 void ffio_init_checksum(AVIOContext *s,
                         unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len),
                         unsigned long checksum);
+unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
+                                    unsigned int len);
 
 #endif // AVFORMAT_AVIO_INTERNAL_H