[core] Loading images to style optimization

This change enables attaching images to the style with batches and
avoids massive re-allocations. Thus, it improves UI performance
especially at start-up time.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mbgl/sprite/sprite_loader.cpp b/src/mbgl/sprite/sprite_loader.cpp
index d4b1cade13..56f7abd50b 100644
--- a/src/mbgl/sprite/sprite_loader.cpp
+++ b/src/mbgl/sprite/sprite_loader.cpp
@@ -90,7 +90,7 @@ void SpriteLoader::emitSpriteLoadedIfComplete() {
     loader->worker.self().invoke(&SpriteLoaderWorker::parse, loader->image, loader->json);
 }
 
-void SpriteLoader::onParsed(std::vector<std::unique_ptr<style::Image>>&& result) {
+void SpriteLoader::onParsed(std::vector<Immutable<style::Image::Impl>> result) {
     observer->onSpriteLoaded(std::move(result));
 }