lib-storage: Fix potential crash when userdb-returns "key+=value" for a nonexistent...

type would have also happened to be initialized to SET_STR for the crash to
happen.

diff --git a/src/lib-storage/mail-storage-service.c b/src/lib-storage/mail-storage-service.c
index 3d21a112b89897fdc91698b85b263d6e62ac1908..14f6380ed401bdabc848d550e286ec199c425384 100644 (file)
--- a/src/lib-storage/mail-storage-service.c
+++ b/src/lib-storage/mail-storage-service.c
@@ -175,7 +175,7 @@ static int set_line(struct mail_storage_service_ctx *ctx,
                enum setting_type type;
 
                value = settings_parse_get_value(set_parser, key, &type);
-               if (type == SET_STR) {
+               if (value != NULL && type == SET_STR) {
                        const char *const *strp = value;
 
                        line = t_strdup_printf("%s=%s%s",