Add static and casts to prevent compiler warnings
diff --git a/library/entropy.c b/library/entropy.c
index 468ef03..9fc11a7 100644
--- a/library/entropy.c
+++ b/library/entropy.c
@@ -85,8 +85,8 @@
/*
* Entropy accumulator update
*/
-int entropy_update( entropy_context *ctx, unsigned char source_id,
- const unsigned char *data, size_t len )
+static int entropy_update( entropy_context *ctx, unsigned char source_id,
+ const unsigned char *data, size_t len )
{
unsigned char header[2];
unsigned char tmp[ENTROPY_BLOCK_SIZE];