Hello!

This patch adds a missing g_free.

Original code:

            tmp_str = g_strdup(gtk_entry_get_text(GTK_ENTRY(cc_dlg->class_namespace_entry)));
            if (! utils_str_equal(tmp_str, ""))
                class_info->namespace_decl = g_strdup_printf("namespace %s;", tmp_str);
            else
                class_info->namespace_decl = g_strdup("");
            // missing g_free here

            tmp_str = g_strdup(gtk_entry_get_text(GTK_ENTRY(cc_dlg->class_implements_entry)));