WinRT: avoid warning about negative timer

If we synthesize, then the audio sink never becomes active, and we never
start the elapsed timer. As asking for the elapsed times of an invalid
timer is undefined behavior, don't do it.

Pick-to: 6.6
Change-Id: Ida32957e37eccada38ae66298b93b334127b6124
Reviewed-by: Jarkko Koivikko <jarkko.koivikko@code-q.fi>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/plugins/tts/winrt/qtexttospeech_winrt.cpp b/src/plugins/tts/winrt/qtexttospeech_winrt.cpp
index ee1f3dd..9cb0b5d 100644
--- a/src/plugins/tts/winrt/qtexttospeech_winrt.cpp
+++ b/src/plugins/tts/winrt/qtexttospeech_winrt.cpp
@@ -423,7 +423,8 @@ void QTextToSpeechEngineWinRTPrivate::sinkStateChanged(QAudio::State sinkState)
                 elapsedTimer.invalidate();
             } else {
                 boundaryTimer.stop();
-                playedTime += elapsedTimer.nsecsElapsed() / 1000;
+                if (elapsedTimer.isValid())
+                    playedTime += elapsedTimer.nsecsElapsed() / 1000;
                 elapsedTimer.invalidate();
                 audioSink->suspend();
             }