tdf#143146 copy functor and arg before calling function that can delete this

Change-Id: I4e29fe6fa4119b709e31156afc5c2a5d08cdc072
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/118625
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
(cherry picked from commit 80f5f74b661b52717ec2848b98cad3be8192b330)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/118629
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
Reviewed-by: Thorsten Behrens <thorsten.behrens@allotropia.de>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/sfx2/source/sidebar/TabBar.cxx b/sfx2/source/sidebar/TabBar.cxx
index 8164c3e..881ec8f 100644
--- a/sfx2/source/sidebar/TabBar.cxx
+++ b/sfx2/source/sidebar/TabBar.cxx
@@ -248,13 +248,17 @@ TabBar::Item::~Item()
    mrTabBar.GetContainer()->move(mxButton.get(), nullptr);
}


IMPL_LINK_NOARG(TabBar::Item, HandleClick, const OString&, void)
{
    // tdf#143146 copy the functor and arg before calling
    // GrabFocusToDocument which may destroy this object
    auto aDeckActivationFunctor = maDeckActivationFunctor;
    auto sDeckId = msDeckId;

    mrTabBar.GrabFocusToDocument();
    try
    {
        maDeckActivationFunctor(msDeckId);
        aDeckActivationFunctor(sDeckId);
    }
    catch(const css::uno::Exception&)
    {} // workaround for #i123198#