[goffice] win32: add header for close.

[Morten Welinder <mortenw src gnome org>]

commit 7bfeb1570de460d08d306788ee06238d0f1bb63a
Author: Morten Welinder <terra gnome org>
Date:   Sun Aug 11 15:31:22 2013 -0400

    win32: add header for close.

 goffice/utils/go-spectre.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/goffice/utils/go-spectre.c b/goffice/utils/go-spectre.c
index d10c6d5..c4010fe 100644
--- a/goffice/utils/go-spectre.c
+++ b/goffice/utils/go-spectre.c
@@ -32,6 +32,7 @@
 #include <gsf/gsf-input-stdio.h>
 #include <gsf/gsf-impl-utils.h>
 #include <string.h>
+#include <unistd.h>
 
 struct _GOSpectre {
        GOImage parent;