Fix recording settings being discarded by the Camera QML type.

Query existing settings from the recorder instead of locally cached
settings as some other agent may have applied some settings separately
and those would otherwise be discarded.

Change-Id: I0ebeaf06c6f7306c5987aa269032842b538a6a8b
Reviewed-by: John Brooks <john.brooks@dereferenced.net>
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>

src/imports/multimedia/qdeclarativecameracapture.cpp

@@ -267,6 +267,7 @@ QSize QDeclarativeCameraCapture::resolution()
 
 void QDeclarativeCameraCapture::setResolution(const QSize &captureResolution)
 {
+    m_imageSettings = m_capture->encodingSettings();
     if (captureResolution != resolution()) {
         m_imageSettings.setResolution(captureResolution);
         m_capture->setEncodingSettings(m_imageSettings);