Update libglnx

This is mostly the `copy_file_range` changes plus the Coverity files.

```
Colin Walters (4):
      localalloc: Abort on EBADF from close() by default
      local-alloc: Remove almost all macros like glnx_free, glnx_unref_variant
      console: Fix Coverity NULL deref warning
      fdio: Merge systemd code to use copy_file_range(), use FICLONE

Jonathan Lebon (1):
      console: trim useless check

Matthew Leeds (1):
      dirfd: Fix typo in comment

Philip Withnall (1):
      glnx-console: Add missing NULL check before writing out text
```

Update submodule: libglnx

Closes: #1081
Approved by: jlebon

1 files changed, 0 insertions, 0 deletions

diff --git a/libglnx b/libglnx
-Subproject ea6df95f22c8f2973714bdbb8b1accc4e37d4d5
+Subproject e226ccf6913d1d852fde1e150a99fab508f85c3