Merge remote-tracking branch 'origin/5.5' into 5.6

Change-Id: Ia563cf734178b821c2aadda8b79b1f09b17de7cd

src/multimedia/audio/qsoundeffect_qaudio_p.cpp

@@ -395,6 +395,8 @@ qint64 PrivateSoundSource::readData( char* data, qint64 len)
                 memcpy(data + dataOffset, sampleData + m_offset, sampleSize - m_offset);
                 bytesWritten += sampleSize - m_offset;
                 int wrapLen = periodSize - (sampleSize - m_offset);
+                if (wrapLen > sampleSize)
+                    wrapLen = sampleSize;
 #ifdef QT_QAUDIO_DEBUG
                 qDebug() << "END OF SOUND: bytesWritten=" << bytesWritten << ", offset=" << m_offset
                          << ", part1=" << (sampleSize-m_offset);

src/plugins/android/src/mediacapture/qandroidcapturesession.cpp

@@ -234,12 +234,14 @@ void QAndroidCaptureSession::start()
 
     if (!m_mediaRecorder->prepare()) {
         emit error(QMediaRecorder::FormatError, QLatin1String("Unable to prepare the media recorder."));
+        if (m_cameraSession)
             restartViewfinder();
         return;
     }
 
     if (!m_mediaRecorder->start()) {
         emit error(QMediaRecorder::FormatError, QLatin1String("Unable to start the media recorder."));
+        if (m_cameraSession)
             restartViewfinder();
         return;
     }
@@ -433,6 +435,9 @@ void QAndroidCaptureSession::updateViewfinder()
 
 void QAndroidCaptureSession::restartViewfinder()
 {
+    if (!m_cameraSession)
+        return;
+
     m_cameraSession->camera()->reconnect();
 
     // This is not necessary on most devices, but it crashes on some if we don't stop the