Bug#881168: fix ftbfs with glibc-2.26

[Matthias Klose]

Package: src:libldm
Version: 0.2.3-5
Severity: important
Tags: sid buster patch

fix ftbfs with glibc-2.26, patch at
https://patches.ubuntu.com/libl/libldm/libldm_0.2.3-5ubuntu1.patch