add empty functions

Source/ksBitmapHelper.pas

@@ -1971,6 +1971,20 @@ begin
   end;
 end;
 
+function TBitmapCodecWIC.Rotate(const AStream: TStream;
+  const Angle: Single): Boolean;
+begin
+  //未完成
+  Result := False;
+end;
+
+function TBitmapCodecWIC.Rotate(const Extension: string; const Angle: Single;
+  const Bitmap: TBitmapSurface): Boolean;
+begin
+  //未完成
+  Result := False;
+end;
+
 function TBitmapCodecWIC.LoadThumbnailFromStream(const AStream: TStream;
   const AFitWidth, AFitHeight: Single; const UseEmbedded, AutoCut: Boolean;
   const Bitmap: TBitmapSurface): Boolean;