fix collada handling of xml nodes.

test/unit/ut3DImportExport.cpp

@@ -44,10 +44,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/Importer.hpp>
 #include <assimp/postprocess.h>
 
-
 using namespace Assimp;
 
-
 TEST(ut3DImportExport, importBoxA) {
     Assimp::Importer importer;
     const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/3D/box_a.3d", aiProcess_ValidateDataStructure);