Implemented the paired samples t test dialog. Closes patch #6378

[pspp-builds.git] / src / ui / gui / psppire-dialog.c

diff --git a/src/ui/gui/psppire-dialog.c b/src/ui/gui/psppire-dialog.c
index b0d8a7a34f22a51d7a5e38cdc44da7ec23a60461..25af04c9ae110d9759f2478136f428e2906d1f76 100644 (file)
--- a/src/ui/gui/psppire-dialog.c
+++ b/src/ui/gui/psppire-dialog.c
@@ -373,6 +373,8 @@ connect_notify_signal (GtkWidget *w, gpointer data)
       GtkTreeViewColumn *col;
       GtkTreeModel *model = gtk_tree_view_get_model (tv);
 
+      if ( model)
+       {
       g_signal_connect_swapped (model, "row-changed",
                                G_CALLBACK (psppire_dialog_notify_change),
                                dialog);
@@ -384,6 +386,7 @@ connect_notify_signal (GtkWidget *w, gpointer data)
       g_signal_connect_swapped (model, "row-inserted",
                                G_CALLBACK (psppire_dialog_notify_change),
                                dialog);
+       }
 
       g_signal_connect_swapped (selection, "changed",
                                G_CALLBACK (psppire_dialog_notify_change),