[balsa] Build with threads disabled

[Peter Bloomfield <PeterB src gnome org>]

commit c669f4abae8d2e394cf39d67edfda975270c3f74
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Sun Jun 7 12:35:57 2009 -0400

    Build with threads disabled
---
 ChangeLog          |    6 ++++++
 libbalsa/mailbox.c |    4 +++-
 2 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 8dde33f..90bb62b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2009-06-07  Peter Bloomfield
 
+	Build with threads disabled
+
+	* libbalsa/mailbox.c (lbm_msgno_changed): fix conditional code.
+
+2009-06-07  Peter Bloomfield
+
 	Update display in an idle callback.
 
 	* libbalsa/mailbox.h: new array of msgnos that have changed.
diff --git a/libbalsa/mailbox.c b/libbalsa/mailbox.c
index 5d9d32c..581eb82 100644
--- a/libbalsa/mailbox.c
+++ b/libbalsa/mailbox.c
@@ -445,10 +445,12 @@ libbalsa_mailbox_index_set_flags(LibBalsaMailbox *mailbox,
    destroys mailbox. Must leave it in sane state.
 */
 
+#ifdef BALSA_USE_THREADS
 static void lbm_msgno_changed_expunged_cb(LibBalsaMailbox * mailbox,
                                           guint seqno);
 static void lbm_get_index_entry_expunged_cb(LibBalsaMailbox * mailbox,
                                             guint seqno);
+#endif
 
 static void
 libbalsa_mailbox_finalize(GObject * object)
@@ -1256,6 +1258,7 @@ lbm_msgno_changed(LibBalsaMailbox * mailbox, guint seqno,
                   GtkTreeIter * iter)
 {
     GtkTreePath *path;
+#ifdef BALSA_USE_THREADS
     gboolean is_main_thread = !libbalsa_am_i_subthread();
 
 #if DEBUG
@@ -1263,7 +1266,6 @@ lbm_msgno_changed(LibBalsaMailbox * mailbox, guint seqno,
         g_warning("Main thread is not holding gdk lock");
 #endif
 
-#ifdef BALSA_USE_THREADS
     if (!is_main_thread) {
         pthread_mutex_lock(&msgnos_changed_lock);
         if (!mailbox->msgnos_changed) {