[folks] Remove deprecated use of string.size()

[Travis Reitter <treitter src gnome org>]

commit 89d6c64c59c9f68e7a14696c1debf07b093e871e
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Wed Nov 10 08:50:41 2010 -0800

    Remove deprecated use of string.size()

 backends/key-file/kf-persona-store.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/backends/key-file/kf-persona-store.vala b/backends/key-file/kf-persona-store.vala
index 97c0610..f4b4ae4 100644
--- a/backends/key-file/kf-persona-store.vala
+++ b/backends/key-file/kf-persona-store.vala
@@ -366,7 +366,7 @@ public class Folks.Backends.Kf.PersonaStore : Folks.PersonaStore
           /* Note: We have to use key_file_data.size () here to get its length
            * in _bytes_ rather than _characters_. bgo#628930 */
           yield this.file.replace_contents_async (key_file_data,
-              key_file_data.size (), null, false, FileCreateFlags.PRIVATE,
+              key_file_data.length, null, false, FileCreateFlags.PRIVATE,
               cancellable);
         }
       catch (Error e)