Fix compilation after merge

#2714

Source/Engine/Audio/AudioSource.h

@@ -273,7 +273,7 @@ public:
     /// Determines whether this audio source started playing audio via audio backend. After audio play it may wait for audio clip data to be loaded or streamed.
     /// [Deprecated in v1.9]
     /// </summary>
-    API_PROPERTY() DEPRECATED FORCE_INLINE bool IsActuallyPlayingSth() const
+    API_PROPERTY() DEPRECATED("Use IsActuallyPlaying instead.") FORCE_INLINE bool IsActuallyPlayingSth() const
     {
         return _isActuallyPlayingSth;
     }

Source/Engine/Content/Asset.h

@@ -184,8 +184,7 @@ public:
     /// <param name="assets">The output collection of the asset ids referenced by this asset.</param>
     /// <param name="files">The output list of file paths referenced by this asset. Files might come from project Content folder (relative path is preserved in cooked game), or external location (copied into Content root folder of cooked game).</param>
     virtual void GetReferences(Array<Guid, HeapAllocation>& assets, Array<String, HeapAllocation>& files) const;
-    
-    
+
     /// <summary>
     /// Gets the asset references. Supported only in Editor.
     /// [Deprecated in v1.9]

Source/Engine/Utilities/RectPack.h

@@ -221,7 +221,7 @@ public:
 /// </summary>
 /// <remarks>Implementation based on https://blackpawn.com/texts/lightmaps/default.html.</remarks>
 template<typename NodeType, typename SizeType = uint32>
-struct DEPRECATED RectPack
+struct DEPRECATED("Use RectPackNode and RectPackAtlas instead.") RectPack
 {
     // Left and Right slots allow to easily move around the atlas like in a tree structure.
     NodeType* Left;