updater: flush the configuration changes before we call execv

Without this the external configuration writer thread might not have
written the config yet.

Change-Id: I361fd8a7ee102a8ca50899fb644a0745ed3386ca
Reviewed-on: https://gerrit.libreoffice.org/40659
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/desktop/source/app/app.cxx b/desktop/source/app/app.cxx
index c6a467682496..fe89eeb3b628 100644
--- a/desktop/source/app/app.cxx
+++ b/desktop/source/app/app.cxx
@@ -1436,6 +1436,10 @@ int Desktop::Main()
                 officecfg::Office::Update::Update::OldBuildID::set(aBuildID, batch);
                 officecfg::Office::Update::Update::UpdateRunning::set(true, batch);
                 batch->commit();
+
+                // make sure the change is written to the configuration before we start the update
+                css::uno::Reference<css::util::XFlushable> xFlushable(css::configuration::theDefaultProvider::get(xContext), UNO_QUERY);;
+                xFlushable->flush();
                 // avoid the old oosplash staying around
                 CloseSplashScreen();
                 update();