set the right position for the new viewport when requesting to open a page from command line

svn path=/trunk/KDE/kdegraphics/okular/; revision=694537

part.cpp

@@ -484,6 +484,10 @@ Part::~Part()
 bool Part::openDocument(const KUrl& url, uint page)
 {
     Okular::DocumentViewport vp( page - 1 );
+    vp.rePos.enabled = true;
+    vp.rePos.normalizedX = 0;
+    vp.rePos.normalizedY = 0;
+    vp.rePos.pos = Okular::DocumentViewport::TopLeft;
     if ( vp.isValid() )
         m_document->setNextDocumentViewport( vp );
     return openUrl( url );