maint: remove useless casts to avoid "make syntax-check" failures

* gzip.c (do_exit): Remove anachronistic cast.
* inflate.c (huft_free): Likewise.
* util.c (add_envopt): Likewise.
* vms/vms.c (vms_expand_args): Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/inflate.c b/inflate.c
index 71ce8ef..928326d 100644
--- a/inflate.c
+++ b/inflate.c
@@ -512,7 +512,7 @@ struct huft *t;         /* table to free */
   while (p != (struct huft *)NULL)
   {
     q = (--p)->v.t;
-    free((char*)p);
+    free(p);
     p = q;
   }
   return 0;