Only free the environment variables we didn't inherit from exec.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/env.c b/lib/env.c
index af0ec29d..33ad0005 100644
--- a/lib/env.c
+++ b/lib/env.c
@@ -23,9 +23,9 @@ long environ_bytes()
 void xclearenv(void)
 {
   if (toys.envc) {
-    char **ss;
+    int i;
 
-    for (ss = environ; *ss; ss++) free(*ss);
+    for (i = 0; environ[i]; i++) if (i>=toys.envc) free(environ[i]);
     free(environ);
   }
   toys.envc = 0;