tac: suppress technically unneeded "free"

* src/tac.c (main): Guard final free with #ifdef lint.
Suggested by Paul Eggert.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/tac.c b/src/tac.c
index 859e0067a..dbfe2b0f3 100644
--- a/src/tac.c
+++ b/src/tac.c
@@ -666,8 +666,10 @@ main (int argc, char **argv)
       ok = false;
     }
 
+#ifdef lint
   size_t offset = sentinel_length ? sentinel_length : 1;
   free (G_buffer - offset);
+#endif
 
   exit (ok ? EXIT_SUCCESS : EXIT_FAILURE);
 }