Move enum LoopMode2D into namespace Urho3D

Source/Urho3D/Urho2D/AnimatedSprite2D.h

@@ -32,6 +32,9 @@ struct spAnimationStateData;
 struct spSkeleton;
 #endif
 
+namespace Urho3D
+{
+
 /// Loop mode.
 enum LoopMode2D
 {
@@ -43,9 +46,6 @@ enum LoopMode2D
     LM_FORCE_CLAMPED
 };
 
-namespace Urho3D
-{
-
 namespace Spriter
 {
     class SpriterInstance;