Don't leak the individual strings when copying environment.

diff --git a/usr.bin/tmux/environ.c b/usr.bin/tmux/environ.c
index 936f9f0..38e7e7c 100644 (file)
--- a/usr.bin/tmux/environ.c
+++ b/usr.bin/tmux/environ.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: environ.c,v 1.6 2014/04/17 14:45:49 nicm Exp $ */
+/* $OpenBSD: environ.c,v 1.7 2015/01/25 16:53:46 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -168,8 +168,11 @@ environ_push(struct environ *env)
                var[strcspn(var, "=")] = '\0';
                ARRAY_ADD(&varlist, var);
        }
-       for (i = 0; i < ARRAY_LENGTH(&varlist); i++)
-               unsetenv(ARRAY_ITEM(&varlist, i));
+       for (i = 0; i < ARRAY_LENGTH(&varlist); i++) {
+               var = ARRAY_ITEM(&varlist, i);
+               unsetenv(var);
+               free(var);
+       }
        ARRAY_FREE(&varlist);
 
        RB_FOREACH(envent, environ, env) {