CppunitTest_libreofficekit_tiledrendering: add more processEventsToIdle calls

With this the test passes for me 10 times in a row, while previously it
failed from time to time, hopefully this fixes the false negatives.

Change-Id: I233276ddfe4e9d8c86557f7f1c29d997f2fb51f6
Reviewed-on: https://gerrit.libreoffice.org/36420
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>
diff --git a/libreofficekit/qa/unit/tiledrendering.cxx b/libreofficekit/qa/unit/tiledrendering.cxx
index a805121..77d149d 100644
--- a/libreofficekit/qa/unit/tiledrendering.cxx
+++ b/libreofficekit/qa/unit/tiledrendering.cxx
@@ -273,6 +273,7 @@ void TiledRenderingTest::testDocumentLoadLanguage(Office* pOffice)

    pDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, css::awt::Key::RETURN);
    pDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, css::awt::Key::RETURN);
    processEventsToIdle();
    pDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, css::awt::Key::UP);
    pDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, css::awt::Key::UP);
    processEventsToIdle();
@@ -300,6 +301,7 @@ void TiledRenderingTest::testDocumentLoadLanguage(Office* pOffice)

    pDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, css::awt::Key::RETURN);
    pDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, css::awt::Key::RETURN);
    processEventsToIdle();
    pDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, css::awt::Key::UP);
    pDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, css::awt::Key::UP);
    processEventsToIdle();