Program: 32910
Project: 32910
Buggy source:
/** 
 * May download the skin if its not in the cache, can be passed a SkinManager#SkinAvailableCallback for handling
 */
public ResourceLocation loadSkin(final MinecraftProfileTexture profileTexture,final Type textureType,@Nullable final SkinManager.SkinAvailableCallback skinAvailableCallback){
  customskinloader.utils.HttpTextureUtil.HttpTextureInfo info=customskinloader.utils.HttpTextureUtil.toHttpTextureInfo(this.skinCacheDir,profileTexture.getUrl());
  final ResourceLocation resourcelocation=new ResourceLocation("String_Node_Str" + info.hash);
  ITextureObject itextureobject=this.textureManager.getTexture(resourcelocation);
  if (itextureobject != null) {
    if (skinAvailableCallback != null) {
      skinAvailableCallback.skinAvailable(textureType,resourcelocation,profileTexture);
    }
  }
 else {
    final IImageBuffer iimagebuffer=textureType == Type.SKIN ? new ImageBufferDownload() : null;
    ThreadDownloadImageData threaddownloadimagedata=new ThreadDownloadImageData(info.cacheFile,info.url,DefaultPlayerSkin.getDefaultSkinLegacy(),new IImageBuffer(){
      public BufferedImage parseUserSkin(      BufferedImage image){
        if (iimagebuffer != null) {
          image=iimagebuffer.parseUserSkin(image);
        }
        return image;
      }
      public void skinAvailable(){
        if (iimagebuffer != null) {
          iimagebuffer.skinAvailable();
        }
        if (skinAvailableCallback != null) {
          skinAvailableCallback.skinAvailable(textureType,resourcelocation,profileTexture);
        }
      }
    }
);
    this.textureManager.loadTexture(resourcelocation,threaddownloadimagedata);
  }
  return resourcelocation;
}

Fixed version (ground truth):
/** 
 * May download the skin if its not in the cache, can be passed a SkinManager#SkinAvailableCallback for handling
 */
public ResourceLocation loadSkin(final MinecraftProfileTexture profileTexture,final Type textureType,@Nullable final SkinManager.SkinAvailableCallback skinAvailableCallback){
  customskinloader.utils.HttpTextureUtil.HttpTextureInfo info=customskinloader.utils.HttpTextureUtil.toHttpTextureInfo(this.skinCacheDir,profileTexture.getUrl());
  final ResourceLocation resourcelocation=new ResourceLocation("String_Node_Str" + info.hash);
  ITextureObject itextureobject=this.textureManager.getTexture(resourcelocation);
  if (itextureobject != null) {
    if (skinAvailableCallback != null) {
      skinAvailableCallback.skinAvailable(textureType,resourcelocation,profileTexture);
    }
  }
 else {
    final IImageBuffer iimagebuffer=textureType == Type.SKIN ? new customskinloader.renderer.SkinBuffer() : null;
    ThreadDownloadImageData threaddownloadimagedata=new ThreadDownloadImageData(info.cacheFile,info.url,DefaultPlayerSkin.getDefaultSkinLegacy(),new IImageBuffer(){
      public BufferedImage parseUserSkin(      BufferedImage image){
        if (iimagebuffer != null) {
          image=iimagebuffer.parseUserSkin(image);
        }
        return image;
      }
      public void skinAvailable(){
        if (iimagebuffer != null) {
          iimagebuffer.skinAvailable();
        }
        if (skinAvailableCallback != null) {
          skinAvailableCallback.skinAvailable(textureType,resourcelocation,profileTexture);
        }
      }
    }
);
    this.textureManager.loadTexture(resourcelocation,threaddownloadimagedata);
  }
  return resourcelocation;
}