g_source_get_current_time has been deprecated since version 2.28

g_source_get_current_time has been deprecated since version 2.28 and should not
be used in newly-written code. ... This function ignores source and is
otherwise the same as g_get_current_time()

not using g_source_get_time seeing as our baseline isn't there yet

Change-Id: I9f389cbb8d23353c0a12eacb215d61256b28f643
diff --git a/vcl/unx/gtk/app/gtkdata.cxx b/vcl/unx/gtk/app/gtkdata.cxx
index 776313b..5189174 100644
--- a/vcl/unx/gtk/app/gtkdata.cxx
+++ b/vcl/unx/gtk/app/gtkdata.cxx
@@ -770,7 +770,7 @@ extern "C" {

    static void sal_gtk_timeout_defer( SalGtkTimeoutSource *pTSource )
    {
        g_source_get_current_time( (GSource *) pTSource, &pTSource->aFireTime );
        g_get_current_time( &pTSource->aFireTime );
        g_time_val_add( &pTSource->aFireTime, pTSource->pInstance->m_nTimeoutMS * 1000 );
    }

@@ -806,7 +806,7 @@ extern "C" {
        SalGtkTimeoutSource *pTSource = (SalGtkTimeoutSource *)pSource;

        GTimeVal aTimeNow;
        g_source_get_current_time( pSource, &aTimeNow );
        g_get_current_time( &aTimeNow );

        return sal_gtk_timeout_expired( pTSource, nTimeoutMS, &aTimeNow );
    }
@@ -816,7 +816,7 @@ extern "C" {
        SalGtkTimeoutSource *pTSource = (SalGtkTimeoutSource *)pSource;

        GTimeVal aTimeNow;
        g_source_get_current_time( pSource, &aTimeNow );
        g_get_current_time( &aTimeNow );

        return ( pTSource->aFireTime.tv_sec < aTimeNow.tv_sec ||
                 ( pTSource->aFireTime.tv_sec == aTimeNow.tv_sec &&