[unity] Fixed compile error on Unity 2017.1 of last commits related to pull request #2351, commit 01273670.

spine-unity/Assets/Spine/Runtime/spine-unity/Components/EditorSkeletonPlayer.cs

@@ -130,7 +130,11 @@ namespace Spine.Unity {
 			oldTime = EditorApplication.timeSinceStartup;
 
 			// Force repaint to update animation smoothly
+#if UNITY_2017_2_OR_NEWER
 			EditorApplication.QueuePlayerLoopUpdate();
+#else
+			SceneView.RepaintAll();
+#endif
 		}
 
 		private class SkeletonAnimationWrapper : IEditorSkeletonWrapper {