Crash when LDAP plugin is not loaded #1863

lib/ProxySQL_Admin.cpp

@@ -4652,6 +4652,9 @@ void ProxySQL_Admin::flush_ldap_variables___database_to_runtime(SQLite3DB *db, b
 
 void ProxySQL_Admin::flush_ldap_variables___runtime_to_database(SQLite3DB *db, bool replace, bool del, bool onlyifempty, bool runtime) {
 	proxy_debug(PROXY_DEBUG_ADMIN, 4, "Flushing LDAP variables. Replace:%d, Delete:%d, Only_If_Empty:%d\n", replace, del, onlyifempty);
+	if (GloMyLdapAuth == NULL) {
+		return;
+	}
 	if (onlyifempty) {
 		char *error=NULL;
 	  int cols=0;