ostree-tests: Add Lintian override for library-not-linked-against-libc

libreaddir-rand.so genuinely doesn't use any libc ABIs directly, only
via GLib.

debian/changelog

@@ -1,3 +1,11 @@
+ostree (2018.4-3) UNRELEASED; urgency=medium
+
+  * ostree-tests: Add Lintian override for library-not-linked-against-libc.
+    libreaddir-rand.so genuinely doesn't use any libc ABIs directly, only
+    via GLib.
+
+ -- Simon McVittie <smcv@debian.org>  Tue, 24 Apr 2018 08:21:54 +0100
+
 ostree (2018.4-2) unstable; urgency=medium
 
   * d/p/Don-t-write-to-parent-repo.patch:

debian/ostree-tests.lintian-overrides

@@ -8,3 +8,7 @@ ostree-tests: symlink-is-self-recursive usr/lib/installed-tests/libostree/tests
 
 # We won't run this on sparc64 currently
 [sparc64]: missing-dep-for-interpreter gjs => gjs (usr/lib/installed-tests/libostree/corrupt-repo-ref.js)
+
+# This shared object genuinely doesn't use any libc ABIs directly,
+# only via GLib
+library-not-linked-against-libc usr/lib/installed-tests/libostree/libreaddir-rand.so