tdf#138187 Don't open UNO hyperlink control's URL twice

It looks like handling the click by opening the URL
was added directly to 'FixedHyperlink' in

    commit f0006e79c4112b06b65c098722729b9a3f3301c7
    Date:   Thu Oct 20 10:49:24 2016 +0200
    Handle link click directly in FixedHyperlink

to deduplicate the handling done explicitly in various
dialogs by themselves.

The handling in 'VCLXFixedHyperlink::ProcessWindowEvent',
which did the same for the case where no action listeners
exist, there since

    commit ea665e6fe7af34fcdcefd73bc05c68eb88e42073
    Date:   Tue Jan 29 14:05:57 2008 +0000
    INTEGRATION: CWS fwk80_SRC680 (1.64.12); FILE MERGED
    2008/01/24 12:27:38 pb 1.64.12.6: fix: #i83756# VCLXFixedHyperlink::ImplGetPropertyIds() added
    2008/01/24 07:50:51 pb 1.64.12.5: RESYNC: (1.64-1.64.18.1); FILE MERGED
    2008/01/15 09:14:01 mav 1.64.12.4: adopt for gcc
    2008/01/15 08:13:04 pb 1.64.12.3: fix: #i83756# open the hyperlink if there are no action listeners
    2008/01/14 09:48:30 pb 1.64.12.2: fix: #i83756# VCLXFixedHyperlink::get/setProperty() added
    2008/01/11 15:04:28 pb 1.64.12.1: fix: #i83756# class VCLXFixedHyperlink

remained, though, so clicking a UNO hyperlink control
resulted in the corresponding URL being opened twice.

Drop the extra handling from there so this only
happens once.

(I couldn't quickly double-check that the URL is
only opened once before f0006e79c4112b06b65c098722729b9a3f3301c7
since opening the dialog from the sample file fails in
such old versions in the bibisect repo.)

Change-Id: I32eace51bf8f14e968a939398c2bf2fd6f83de28
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/105793
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
diff --git a/toolkit/source/awt/vclxwindows.cxx b/toolkit/source/awt/vclxwindows.cxx
index 554b5fc..d740413 100644
--- a/toolkit/source/awt/vclxwindows.cxx
+++ b/toolkit/source/awt/vclxwindows.cxx
@@ -2877,28 +2877,6 @@ void VCLXFixedHyperlink::ProcessWindowEvent( const VclWindowEvent& rVclWindowEve
                aEvent.Source = static_cast<cppu::OWeakObject*>(this);
                maActionListeners.actionPerformed( aEvent );
            }
            else
            {
                // open the URL
                OUString sURL;
                VclPtr< FixedHyperlink > pBase = GetAs< FixedHyperlink >();
                if ( pBase )
                    sURL = pBase->GetURL();
                Reference< css::system::XSystemShellExecute > xSystemShellExecute( css::system::SystemShellExecute::create(
                    ::comphelper::getProcessComponentContext() ) );
                if ( !sURL.isEmpty() )
                {
                    try
                    {
                        // start browser
                        xSystemShellExecute->execute(
                            sURL, OUString(), css::system::SystemShellExecuteFlags::URIS_ONLY );
                    }
                    catch( uno::Exception& )
                    {
                    }
                }
            }
            [[fallthrough]];
        }
        default: