Add some ifdefs to prevent build failures due to unused
variables
fisheye_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
gdouble * in_y)
{
+#ifndef GST_DISABLE_GST_DEBUG
GstFisheye *fisheye = GST_FISHEYE_CAST (gt);
+#endif
gdouble norm_x;
gdouble norm_y;
gdouble r;
gdouble * in_y)
{
GstCircleGeometricTransform *cgt = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (gt);
+#ifndef GST_DISABLE_GST_DEBUG
GstTunnel *tunnel = GST_TUNNEL_CAST (gt);
+#endif
gdouble norm_x, norm_y;
gdouble width = gt->width;