[balsa/gtk3] Do not crash on identities-changed

[Peter Bloomfield <PeterB src gnome org>]

commit d6a5a605868708c97a32fb17b378eb3fa93c7f9d
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Tue Jan 15 18:01:30 2013 -0500

    Do not crash on identities-changed
    
    	* src/main-window.c: emit signal instead of calling NULL class
    	method.

 ChangeLog         |    5 +++++
 src/main-window.c |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index e37d99e..241cb7a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-01-15  Peter Bloomfield
+
+	* src/main-window.c: emit signal instead of calling NULL class
+	method.
+
 2013-01-08  Peter Bloomfield
 
 	* src/pref-manager.c (create_layout_types_menu): use relevant
diff --git a/src/main-window.c b/src/main-window.c
index 4397824..481d5b2 100644
--- a/src/main-window.c
+++ b/src/main-window.c
@@ -2566,7 +2566,7 @@ balsa_identities_changed(BalsaWindow *bw)
 {
     g_return_if_fail(BALSA_IS_WINDOW(bw));
 
-    BALSA_WINDOW_GET_CLASS(bw)->identities_changed(bw);
+    g_signal_emit(bw, window_signals[IDENTITIES_CHANGED], (GQuark) 0);
 }
 
 static gboolean