avio: make init_checksum() internal.
diff --git a/libavformat/avio_internal.h b/libavformat/avio_internal.h
index 6eee947..c50514d 100644
--- a/libavformat/avio_internal.h
+++ b/libavformat/avio_internal.h
@@ -74,5 +74,8 @@
int ff_udp_set_remote_url(URLContext *h, const char *uri);
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);
#endif // AVFORMAT_AVIO_INTERNAL_H