qemu: correctly pass qemuBuildVHostUserFsDevProps
qemu: correctly pass qemuBuildVHostUserFsDevProps

../../work/libvirt/src/qemu/qemu_hotplug.c: In function ‘qemuDomainAttachFSDevice’:
../../work/libvirt/src/qemu/qemu_hotplug.c:3458:68: error: ordered comparison of pointer with integer zero [-Werror=extra]
 3458 |     if (qemuBuildVHostUserFsDevProps(fs, vm->def, charAlias, priv) < 0)
      |                                                                    ^
cc1: all warnings being treated as errors

Fixes: b98787303498cfb8426ab27ee62247b164101242
Signed-off-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>

jfehlig/libvirt,olafhering/libvirt,libvirt/libvirt,crobinso/libvirt,zippy2/libvirt,jfehlig/libvirt,crobinso/libvirt,olafhering/libvirt,nertpinx/libvirt,olafhering/libvirt,libvirt/libvirt,libvirt/libvirt,zippy2/libvirt,nertpinx/libvirt,nertpinx/libvirt,nertpinx/libvirt,jfehlig/libvirt,zippy2/libvirt,zippy2/libvirt,nertpinx/libvirt,libvirt/libvirt,crobinso/libvirt,olafhering/libvirt,jfehlig/libvirt,crobinso/libvirt