[gnumeric] Fix clipboard related crash. [#702868]

[Andreas J. Guelzow <guelzow src gnome org>]

commit 1d3d720ce913592d783c2d839921116b6f7b6923
Author: Andreas J Guelzow <aguelzow pyrshep ca>
Date:   Sun Jun 23 19:23:10 2013 -0600

    Fix clipboard related crash. [#702868]
    
    2013-06-23  Andreas J. Guelzow <aguelzow pyrshep ca>
    
        * src/gui-clipboard.c (x_clipboard_get_cb): take care of the case
        without sheet

 ChangeLog           |    5 +++++
 NEWS                |    4 +++-
 src/gui-clipboard.c |    5 +++--
 3 files changed, 11 insertions(+), 3 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index c019fc5..46db596 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-06-23  Andreas J. Guelzow <aguelzow pyrshep ca>
+
+       * src/gui-clipboard.c (x_clipboard_get_cb): take care of the case
+       without sheet
+
 2013-06-22  Jean Brefort  <jean brefort normalesup org>
 
        * src/mstyle.c (gnm_style_set_pattern): don't accept GNM_SHEET_PATTERNS as
diff --git a/NEWS b/NEWS
index 1ebe788..fc6199e 100644
--- a/NEWS
+++ b/NEWS
@@ -29,9 +29,11 @@ Andreas:
        * Some documentation improvements. [Debian #621735] [Debian #530462]
        * Fix crash on xlsx import due to external references. [#702407]
        * Fix reading of conditional formats from xls files. [#702612]
-       * Fix reading of solid fill conditional formats from xlsx files. [#702615]
+       * Fix reading of solid fill conditional formats from xlsx files. 
+         [#702615]
        * Improve xlsx import of new stat function names.
        * Fix export of FLOOR(x) to xlsx. [Debian #464732]
+       * Fix clipboard related crash. [#702868]
 
 Darrell Tangman:
        * Update documentation for Edit and Insert menus. [#700596]
diff --git a/src/gui-clipboard.c b/src/gui-clipboard.c
index 36ad9e6..556877d 100644
--- a/src/gui-clipboard.c
+++ b/src/gui-clipboard.c
@@ -921,7 +921,7 @@ x_clipboard_get_cb (GtkClipboard *gclipboard, GtkSelectionData *selection_data,
                /* We implicitly registered this when calling
                 * gtk_clipboard_set_can_store. We're supposed to
                 * ignore it. */
-       } else {
+       } else if (clipboard->origin_sheet) {
                Workbook *wb = clipboard->origin_sheet->workbook;
                GString *res = cellregion_to_string (clipboard,
                        TRUE, workbook_date_conv (wb));
@@ -937,7 +937,8 @@ x_clipboard_get_cb (GtkClipboard *gclipboard, GtkSelectionData *selection_data,
                                g_message ("clipboard empty text");
                        gtk_selection_data_set_text (selection_data, "", 0);
                }
-       }
+       } else
+               gtk_selection_data_set_text (selection_data, "", 0);
 
        /*
         * If this was a CUT operation we need to clear the content that