Commit 70eb5fde05 removed zlib from the libmigration dependencies but
missed removing the zlib include from the header file. zlib doesn't
appear to be used anywhere in qemu-file.h. This is fine in most
environments where zlib is nearly always in the default include path but
breaks the build when it isn't (NixOS for example).
Fixes: 70eb5fde05 ("migration: remove unnecessary zlib dependency")
Signed-off-by: Chad Jablonski <chad@jablonski.xyz>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
985062e231