Workaround compile error with SIP_OVERRIDE

Author: aronbierbaum

python/sip/QtAVWidgets/GLWidgetRenderer2.sip

@@ -34,7 +34,7 @@ public:
 
 public:
     GLWidgetRenderer2(QWidget* parent /TransferThis/ = 0, const QGLWidget* shareWidget = 0, Qt::WindowFlags f = 0);
-    virtual VideoRendererId id();
+    VideoRendererId id();
     virtual QWidget* widget();
 
 signals:

python/sip/QtAVWidgets/GraphicsItemRenderer.sip

@@ -34,7 +34,7 @@ public:
 
 public:
     GraphicsItemRenderer(QGraphicsItem* parent /TransferThis/ = 0);
-    virtual VideoRendererId id();
+    VideoRendererId id();
 
     bool isSupported(VideoFormat::PixelFormat pixfmt);
 

python/sip/QtAVWidgets/OpenGLWidgetRenderer.sip

@@ -34,7 +34,7 @@ public:
 
 public:
     explicit OpenGLWidgetRenderer(QWidget* parent /TransferThis/ = 0, Qt::WindowFlags f = 0);
-    virtual VideoRendererId id();
+    VideoRendererId id() const;
     virtual QWidget* widget();
 
 signals:

python/sip/QtAVWidgets/WidgetRenderer.sip

@@ -24,7 +24,7 @@ public:
 
 public:
     WidgetRenderer(QWidget* parent /TransferThis/ = 0, Qt::WindowFlags f = 0);
-    virtual VideoRendererId id();
+    VideoRendererId id();
     virtual QWidget* widget();
 
 signals: