(base16_encode_update): Need to undef before

redefining.

Rev: src/nettle/base16-meta.c:1.2

base16-meta.c

@@ -51,6 +51,7 @@ base16_encode_update_wrapper(void *ctx, uint8_t *dst,
   return BASE16_ENCODE_LENGTH(length);
 }
 
+#undef base16_encode_update
 #define base16_encode_update base16_encode_update_wrapper
 
 static unsigned