ImageView: Remove hard dependency on QtSvg headers

Change-Id: I2c8aa3017a95b36b3d96687f2da03eb2ef558222
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

src/plugins/imageviewer/imageview.cpp

@@ -58,9 +58,6 @@
 #include <utils/fileutils.h>
 #include <utils/qtcassert.h>
 
-#include <QSvgRenderer>
-#include <QGraphicsSvgItem>
-
 #include <QMessageBox>
 #include <QGraphicsRectItem>
 
@@ -75,6 +72,11 @@
 
 #include <qmath.h>
 
+#ifndef QT_NO_SVG
+#include <QGraphicsSvgItem>
+#include <QSvgRenderer>
+#endif
+
 namespace ImageViewer {
 namespace Constants {
     const qreal DEFAULT_SCALE_FACTOR = 1.2;