restore_env(): free the saved environment variable once we are done

Just like we free orig_cwd, which is the value of the original
working directory saved in save_env_before_alias(), once we are
done with it, the contents of orig_env[] array, saved in the
save_env_before_alias() function should be freed; otherwise,
the second and subsequent calls to save/restore pair will leak
the memory allocated in save_env_before_alias().

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git.c b/git.c
index 1cbe2676f542d01561e1852413ec1313acbacaf6..93f569d0644263d90babbd7c26e2768b52a84e60 100644 (file)
--- a/git.c
+++ b/git.c
@@ -54,10 +54,12 @@ static void restore_env(int external_alias)
                if (external_alias &&
                    !strcmp(env_names[i], GIT_PREFIX_ENVIRONMENT))
                        continue;
-               if (orig_env[i])
+               if (orig_env[i]) {
                        setenv(env_names[i], orig_env[i], 1);
-               else
+                       free(orig_env[i]);
+               } else {
                        unsetenv(env_names[i]);
+               }
        }
 }