[gnumeric] workbook.c: add include.

[Morten Welinder <mortenw src gnome org>]

commit 6a2cc95b54550aa3d2697d321ef4766a21bd6af9
Author: Morten Welinder <terra gnome org>
Date:   Fri May 8 18:32:35 2009 -0400

    workbook.c: add include.
---
 src/workbook.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/workbook.c b/src/workbook.c
index 4b5a15b..685030e 100644
--- a/src/workbook.c
+++ b/src/workbook.c
@@ -35,6 +35,7 @@
 #include "gutils.h"
 #include "gnm-marshalers.h"
 #include "style-color.h"
+#include "sheet-style.h"
 
 #include <goffice/app/file.h>
 #include <goffice/app/io-context.h>