[folks] telepathy: Handle null birthday strings

[Philip Withnall <pwithnall src gnome org>]

commit 01c0fd63a6371b804978fb3f523551114d4d06c1
Author: Philip Withnall <philip tecnocode co uk>
Date:   Sat Feb 18 13:56:54 2012 +0000

    telepathy: Handle null birthday strings
    
    Closes: https://bugzilla.gnome.org/show_bug.cgi?id=670347

 NEWS                                    |    1 +
 backends/telepathy/lib/tpf-persona.vala |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 50bfb28..d95725a 100644
--- a/NEWS
+++ b/NEWS
@@ -6,6 +6,7 @@ Bugs fixed:
   assertion failed: (_tmp6_)
 * Bug 672381 â invalid uninstantiatable type `<invalid>' in cast to
   `FolksIndividual'
+* Bug 670347 â Check for null birthday strings
 
 Overview of changes from libfolks 0.6.6 to libfolks 0.6.7
 =============================================================
diff --git a/backends/telepathy/lib/tpf-persona.vala b/backends/telepathy/lib/tpf-persona.vala
index f96d460..0b8f864 100644
--- a/backends/telepathy/lib/tpf-persona.vala
+++ b/backends/telepathy/lib/tpf-persona.vala
@@ -785,7 +785,7 @@ public class Tpf.Persona : Folks.Persona,
           if (info.field_name == "") {}
           else if (info.field_name == "bday")
             {
-              new_birthday_str = info.field_value[0];
+              new_birthday_str = info.field_value[0] ?? "";
             }
           else if (info.field_name == "email")
             {