fix tab-space mixed indentation

No code change

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
diff --git a/apps/apps.c b/apps/apps.c
index 60a2728..537d43a 100644
--- a/apps/apps.c
+++ b/apps/apps.c
@@ -570,9 +570,9 @@
     CONF *to_free = NULL;
 
     if (config == NULL)
-	config = to_free = app_load_config_quiet(default_config_file);
+        config = to_free = app_load_config_quiet(default_config_file);
     if (config == NULL)
-	return 1;
+        return 1;
 
     if (CONF_modules_load(config, NULL, 0) <= 0) {
         BIO_printf(bio_err, "Error configuring OpenSSL modules\n");