fold: fix fadvise hint

* src/fold.c (fold_file): Apply fadvise to istream, not stdin.
This bug would have inhibited the fadvise optimization when not
reading from standard input.

diff --git a/src/fold.c b/src/fold.c
index d5858568cab0007cb29b9a735ef373ce0bda37a2..4da834b17febde4e481294ddc12338ffe0a577e8 100644 (file)
--- a/src/fold.c
+++ b/src/fold.c
@@ -143,7 +143,7 @@ fold_file (char const *filename, size_t width)
       return false;
     }
 
-  fadvise (stdin, FADVISE_SEQUENTIAL);
+  fadvise (istream, FADVISE_SEQUENTIAL);
 
   while ((c = getc (istream)) != EOF)
     {