[pdfmod] Don't crash if unable to save (bgo#633125)

[Gabriel Burt <gburt src gnome org>]

commit fb88150d109b638c1a0a8c44d6e02a8b21c3eba8
Author: Gabriel Burt <gabriel burt gmail com>
Date:   Mon Oct 25 14:25:10 2010 -0500

    Don't crash if unable to save (bgo#633125)

 src/PdfMod/Gui/Actions.cs |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/src/PdfMod/Gui/Actions.cs b/src/PdfMod/Gui/Actions.cs
index 276a0e5..2a7524e 100644
--- a/src/PdfMod/Gui/Actions.cs
+++ b/src/PdfMod/Gui/Actions.cs
@@ -251,8 +251,12 @@ namespace PdfMod.Gui
 
         void OnSave (object o, EventArgs args)
         {
-            app.Document.Save (app.Document.SuggestedSavePath);
-            undo_manager.Clear ();
+            try {
+                app.Document.Save (app.Document.SuggestedSavePath);
+                undo_manager.Clear ();
+            } catch (Exception e) {
+                Log.Error (Catalog.GetString ("Unable to Save Document"), e.Message, true);
+            }
         }
 
         void OnSaveAs (object o, EventArgs args)