From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Thu, 29 Jul 2021 08:37:23 +0000 (+0300)
Subject: zlib: Handle empty zlib_save_level the same as if it doesn't exist
X-Git-Tag: 2.3.18~267
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d7dc02bbb09715adeffecc7d80a4606a97da413e;p=thirdparty%2Fdovecot%2Fcore.git

zlib: Handle empty zlib_save_level the same as if it doesn't exist
---

diff --git a/src/plugins/zlib/zlib-plugin.c b/src/plugins/zlib/zlib-plugin.c
index ff43994b8e..f716058136 100644
--- a/src/plugins/zlib/zlib-plugin.c
+++ b/src/plugins/zlib/zlib-plugin.c
@@ -355,7 +355,7 @@ static void zlib_mail_user_created(struct mail_user *user)
 	}
 	name = zuser->save_handler == NULL ? NULL :
 		mail_user_plugin_getenv(user, "zlib_save_level");
-	if (name != NULL) {
+	if (name != NULL && name[0] != '\0') {
 		if (str_to_int(name, &zuser->save_level) < 0 ||
 		    zuser->save_level < zuser->save_handler->get_min_level() ||
 		    zuser->save_level > zuser->save_handler->get_max_level()) {