Fix get_pixel with image_view

include/mapnik/image_view_impl.hpp

@@ -100,7 +100,7 @@ inline std::size_t image_view<T>::height() const
 template <typename T>
 inline typename image_view<T>::pixel_type const& image_view<T>::operator() (std::size_t i, std::size_t j) const
 {
-    return data_(i,j);
+    return data_(i + x_,j + y_);
 }
 
 template <typename T>

test/unit/imaging/image_io_test.cpp

@@ -78,5 +78,7 @@ SECTION("readers") {
         REQUIRE(false);
     }
 
-}
-}
+} // END SECTION
+
+
+} // END TEST_CASE