[gnome-documents] build: Update libgd to fix a crash when the list view is destroyed

[Debarshi Ray <debarshir src gnome org>]

commit 1119380db3eae7c94c5e055ab2349317eac526e9
Author: Debarshi Ray <debarshir gnome org>
Date:   Sat Mar 22 13:34:27 2014 +0100

    build: Update libgd to fix a crash when the list view is destroyed
    
    https://bugzilla.gnome.org/show_bug.cgi?id=707619

 libgd |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgd b/libgd
index 62f9b8b..41820ae 160000
--- a/libgd
+++ b/libgd
@@ -1 +1 @@
-Subproject commit 62f9b8b92599b38d986bd26d5780edd400d318c9
+Subproject commit 41820ae96142312ffc0109b65d2adad6f007e1fd