[gnome-font-viewer] build: make sure to update the submodule on autogen

[Cosimo Cecchi <cosimoc src gnome org>]

commit e3c825def7aae8d5a0595f3cc57c12b33242db2c
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Thu Aug 30 14:11:40 2012 -0400

    build: make sure to update the submodule on autogen

 autogen.sh |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index da7c93b..3972c79 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -19,4 +19,6 @@ which gnome-autogen.sh || {
     exit 1
 }
 
+git submodule update --init --recursive
+
 USE_GNOME2_MACROS=1 USE_COMMON_DOC_BUILD=yes . gnome-autogen.sh