946     *prev_image,  in OptimizeLayerFrames()  local
1018   prev_image=CloneImage(curr,curr->columns,curr->rows,MagickTrue,exception);  in OptimizeLayerFrames()
1019   if (prev_image == (Image *) NULL)  in OptimizeLayerFrames()
1025   prev_image->page=curr->page;  /* ERROR: <-- should not be need, but is! */  in OptimizeLayerFrames()
1026   prev_image->page.x=0;  in OptimizeLayerFrames()
1027   prev_image->page.y=0;  in OptimizeLayerFrames()
1028   prev_image->dispose=NoneDispose;  in OptimizeLayerFrames()
1029   prev_image->background_color.alpha_trait=BlendPixelTrait;  in OptimizeLayerFrames()
1030   prev_image->background_color.alpha=(MagickRealType) TransparentAlpha;  in OptimizeLayerFrames()
1031   (void) SetImageBackgroundColor(prev_image,exception);  in OptimizeLayerFrames()
1041   bounds[0]=CompareImagesBounds(prev_image,curr,CompareAnyLayer,exception);  in OptimizeLayerFrames()
1096         try_bounds=CompareImagesBounds(prev_image,curr,CompareAnyLayer,exception);  in OptimizeLayerFrames()
1097         try_cleared=IsBoundsCleared(prev_image,curr,&try_bounds,exception);  in OptimizeLayerFrames()
1131                 prev_image=DestroyImage(prev_image);  in OptimizeLayerFrames()
1159             prev_image=DestroyImage(prev_image);  in OptimizeLayerFrames()
1290          prev_image=DestroyImage(prev_image);  in OptimizeLayerFrames()
1291          prev_image=dup_image, dup_image=(Image *) NULL;  in OptimizeLayerFrames()
1303           prev_image=DestroyImage(prev_image);  in OptimizeLayerFrames()
1305           prev_image=bgnd_image, bgnd_image=(Image *) NULL;  in OptimizeLayerFrames()
1310             prev_image=ReferenceImage(curr->previous);  in OptimizeLayerFrames()
1311             if (prev_image == (Image *) NULL)  in OptimizeLayerFrames()
1320     assert(prev_image != (Image *) NULL);  in OptimizeLayerFrames()
1339   prev_image=DestroyImage(prev_image);  in OptimizeLayerFrames()
1349     prev_image=CloneImage(curr,0,0,MagickTrue,exception);  in OptimizeLayerFrames()
1350     if (prev_image == (Image *) NULL)  in OptimizeLayerFrames()
1352     prev_image->background_color.alpha_trait=BlendPixelTrait;  in OptimizeLayerFrames()
1363       prev_image->ticks_per_second = 100L;  in OptimizeLayerFrames()
1364       prev_image->delay = time*prev_image->ticks_per_second/1000;  in OptimizeLayerFrames()
1366     bgnd_image=CropImage(prev_image,&bounds[i],sans_exception);  in OptimizeLayerFrames()
1367     prev_image=DestroyImage(prev_image);  in OptimizeLayerFrames()