Resolves: tdf#158534 two help pages from print help button

its either use the default "help" response, or have an explicit
handler for the help button.

Its more consistent to just use the default "help" response for
the print dialog as done everywhere else.

Change-Id: I0bb173e67a3bea1c10cc315cfcf212376f2710c2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/160340
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
(cherry picked from commit a639b7432e7d35b271fbfea9021f5df56d681006)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/160357
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
diff --git a/vcl/inc/printdlg.hxx b/vcl/inc/printdlg.hxx
index fc4085a..bf058b0 100644
--- a/vcl/inc/printdlg.hxx
+++ b/vcl/inc/printdlg.hxx
@@ -131,7 +131,6 @@ namespace vcl

        std::unique_ptr<weld::Button>           mxOKButton;
        std::unique_ptr<weld::Button>           mxCancelButton;
        std::unique_ptr<weld::Button>           mxHelpButton;

        std::unique_ptr<weld::Button>           mxBackwardBtn;
        std::unique_ptr<weld::Button>           mxForwardBtn;
diff --git a/vcl/source/window/printdlg.cxx b/vcl/source/window/printdlg.cxx
index 9fcb055..b83d516 100644
--- a/vcl/source/window/printdlg.cxx
+++ b/vcl/source/window/printdlg.cxx
@@ -543,7 +543,6 @@ PrintDialog::PrintDialog(weld::Window* i_pWindow, std::shared_ptr<PrinterControl
    , mxReverseOrderBox(m_xBuilder->weld_check_button("reverseorder"))
    , mxOKButton(m_xBuilder->weld_button("ok"))
    , mxCancelButton(m_xBuilder->weld_button("cancel"))
    , mxHelpButton(m_xBuilder->weld_button("help"))
    , mxBackwardBtn(m_xBuilder->weld_button("backward"))
    , mxForwardBtn(m_xBuilder->weld_button("forward"))
    , mxFirstBtn(m_xBuilder->weld_button("btnFirst"))
@@ -676,7 +675,6 @@ PrintDialog::PrintDialog(weld::Window* i_pWindow, std::shared_ptr<PrinterControl
    // setup click hdl
    mxOKButton->connect_clicked(LINK(this, PrintDialog, ClickHdl));
    mxCancelButton->connect_clicked(LINK(this, PrintDialog, ClickHdl));
    mxHelpButton->connect_clicked(LINK(this, PrintDialog, ClickHdl));
    mxSetupButton->connect_clicked( LINK( this, PrintDialog, ClickHdl ) );
    mxBackwardBtn->connect_clicked(LINK(this, PrintDialog, ClickHdl));
    mxForwardBtn->connect_clicked(LINK(this, PrintDialog, ClickHdl));
@@ -1872,15 +1870,6 @@ IMPL_LINK(PrintDialog, ClickHdl, weld::Button&, rButton, void)
        storeToSettings();
        m_xDialog->response(&rButton == mxOKButton.get() ? RET_OK : RET_CANCEL);
    }
    else if( &rButton == mxHelpButton.get() )
    {
        // start help system
        Help* pHelp = Application::GetHelp();
        if( pHelp )
        {
            pHelp->Start("vcl/ui/printdialog/PrintDialog", mxOKButton.get());
        }
    }
    else if( &rButton == mxForwardBtn.get() )
    {
        previewForward();