Update M3DExporter.cpp

code/AssetLib/M3D/M3DExporter.cpp

@@ -47,7 +47,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define M3D_EXPORTER
 #ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
 #define M3D_NODUP
-#endif
+
 
 // Header files, standard library.
 #include <memory> // shared_ptr
@@ -437,6 +437,6 @@ void M3DExporter::NodeWalk(const M3DWrapper &m3d, const aiNode *pNode, aiMatrix4
     }
 }
 } // namespace Assimp
-
+#endif
 #endif // ASSIMP_BUILD_NO_M3D_EXPORTER
 #endif // ASSIMP_BUILD_NO_EXPORT