libs/nixio: properly cast len argument for OS X sendfile()

diff --git a/libs/nixio/src/splice.c b/libs/nixio/src/splice.c
index 4f7c043..38a45c2 100644 (file)
--- a/libs/nixio/src/splice.c
+++ b/libs/nixio/src/splice.c
@@ -144,7 +144,7 @@ static int nixio_sendfile(lua_State *L) {
 
        do {
 #ifdef __DARWIN__
-               r = sendfile(infd, sock, offset, len, NULL, 0);
+               r = sendfile(infd, sock, offset, (off_t *)&len, NULL, 0);
 #else
                r = sendfile(infd, sock, offset, len, NULL, &spliced, 0);
 #endif