Fixed crash

source/ubl-settings-logging.c

@@ -2241,6 +2241,9 @@ void on_log_path_filechooser_save(GtkWidget *, dictionary *dict){
     GFile *file = gtk_file_chooser_get_file(GTK_FILE_CHOOSER(dialog->FileChooser));
     if (!file){
         filename = gtk_file_chooser_get_current_folder(GTK_FILE_CHOOSER(dialog->FileChooser));
+        if (yon_char_is_empty(filename)){
+            return;
+        }
             if (filename[strlen(filename)-1]=='/')
                 filename = yon_char_append(filename,"*");
             else