[6.0] 43815427c Synchronize with VTEST

[Dridi Boukelmoune]

commit 43815427c92c87c1be0484771b7448148d9bcd22
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Tue Jan 15 13:45:58 2019 +0000

    Synchronize with VTEST

diff --git a/lib/libvarnish/vfil.c b/lib/libvarnish/vfil.c
index 345096a7c..29650175a 100644
--- a/lib/libvarnish/vfil.c
+++ b/lib/libvarnish/vfil.c
@@ -50,7 +50,7 @@
 #ifdef HAVE_SYS_VFS_H
 #  include <sys/vfs.h>
 #endif
-#if defined(__linux__) && defined(HAVE_FALLOCATE)
+#ifdef HAVE_FALLOCATE
 #  include <linux/magic.h>
 #endif