[master] d760826b4 Include headers to compile on musl

[Guillaume Quintard]

commit d760826b43b7e35975437c7c6d069450d8caf511
Author: Guillaume Quintard <guillaume at varnish-software.com>
Date:   Tue Aug 6 09:53:14 2019 -0700

    Include headers to compile on musl

diff --git a/lib/libvarnish/vte.c b/lib/libvarnish/vte.c
index f71a147b8..fa6be82be 100644
--- a/lib/libvarnish/vte.c
+++ b/lib/libvarnish/vte.c
@@ -31,6 +31,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h> /* for MUSL (ssize_t) */
 
 #include "vdef.h"
 #include "vqueue.h"