[baobab] Guard against null strings before escaping

[Stefano Facchini <sfacchini src gnome org>]

commit 14620655d57e94dfa7861baa2a3c722fd9ffd039
Author: Stefano Facchini <stefano facchini gmail com>
Date:   Sat Apr 12 16:33:29 2014 +0200

    Guard against null strings before escaping

 src/baobab-cellrenderers.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/baobab-cellrenderers.vala b/src/baobab-cellrenderers.vala
index bdd7072..f61dabc 100644
--- a/src/baobab-cellrenderers.vala
+++ b/src/baobab-cellrenderers.vala
@@ -25,7 +25,7 @@ namespace Baobab {
 
         public string name {
             set {
-                var escaped = Markup.escape_text (value);
+                var escaped = (value != null) ? Markup.escape_text (value) : null;
                 switch (state) {
                 case Scanner.State.ERROR:
                     markup = "<b>%s</b>".printf (escaped);