[gnumeric] GUI: Fix another split pane potential crash on exit.

[Morten Welinder <mortenw src gnome org>]

commit 344aa55c75e0db2167fe3f9120ea0ebe406a3000
Author: Morten Welinder <terra gnome org>
Date:   Wed May 28 06:57:14 2014 -0400

    GUI: Fix another split pane potential crash on exit.

 ChangeLog               |    5 +++++
 NEWS                    |    2 +-
 src/sheet-control-gui.c |    5 +++++
 3 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 4869f16..ec4b1fc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-05-28  Morten Welinder  <terra gnome org>
+
+       * src/sheet-control-gui.c (scg_finalize): Get rid of the drag
+       handler.  Fixes #730884.
+
 2014-05-27  Morten Welinder  <terra gnome org>
 
        * src/gnm-pane.c (gnm_pane_header_init): Hold references to
diff --git a/NEWS b/NEWS
index 10ec133..0a514d4 100644
--- a/NEWS
+++ b/NEWS
@@ -2,7 +2,7 @@ Gnumeric 1.12.17
 
 Morten:
        * Fix UMR.  [#730727]
-       * Fix crash on exit.  [#730857]
+       * Fix crashes on exit.  [#730857]  [#730884]
 
 --------------------------------------------------------------------------
 Gnumeric 1.12.16
diff --git a/src/sheet-control-gui.c b/src/sheet-control-gui.c
index d64102a..0411e48 100644
--- a/src/sheet-control-gui.c
+++ b/src/sheet-control-gui.c
@@ -1793,6 +1793,11 @@ scg_finalize (GObject *object)
                g_ptr_array_free (scg->row_group.buttons, TRUE);
        }
 
+       if (scg->pane_drag_handler) {
+               g_source_remove (scg->pane_drag_handler);
+               scg->pane_drag_handler = 0;
+       }
+
        scg_comment_timer_clear (scg);
 
        if (scg->delayedMovement.timer != 0) {