[Nbd] nbd 2.9.25 compile error on systems without FALLOC_FL_PUNCH_HOLE support

[Peter Simons <simons@...813...>]

The 2.9.25 release contains a bug that leads to the following compile
error when building on Linux systems without FALLOC_FL_PUNCH_HOLE
support:

  nbd-server.c:1477:28: error: 'FALLOC_FL_PUNCH_HOLE' undeclared (first use in this function)

The problem is use of #ifdef where #if was intended. I see that this bug
has been fixed in Git almost a month ago, so I wonder whether there are
any plans to release an update soon?

Take care,
Peter