Move another print dialog reference outside #ifdef HAVE_LIBPCAP/#endif.

Change-Id: I394360c892ca47772604f1e97a6daa23be49f8b4
Reviewed-on: https://code.wireshark.org/review/32995
Reviewed-by: Guy Harris <guy@alum.mit.edu>

ui/qt/main_window.cpp

@@ -925,8 +925,8 @@ void MainWindow::closeEvent(QCloseEvent *event) {
 
 #ifdef HAVE_LIBPCAP
     if (capture_interfaces_dialog_) capture_interfaces_dialog_->close();
-    if (pdlg_) pdlg_->close();
 #endif
+    if (pdlg_) pdlg_->close();
     // Make sure we kill any open dumpcap processes.
     delete welcome_page_;