crypto: Make KeyManager a singleton class

Previously, we were reading the keys everytime a KeyManager object was created, causing yuzu to reread the keys file multiple hundreds of times when loading the game list.
With this change, it is only loaded once.
On my system, this decreased game list loading times by a factor of 20.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/core/file_sys/submission_package.h b/src/core/file_sys/submission_package.h
index ee9b6ce17..bd577f6e5 100644
--- a/src/core/file_sys/submission_package.h
+++ b/src/core/file_sys/submission_package.h
@@ -73,7 +73,7 @@ private:
     std::map<u64, std::map<std::pair<TitleType, ContentRecordType>, std::shared_ptr<NCA>>> ncas;
     std::vector<VirtualFile> ticket_files;
 
-    Core::Crypto::KeyManager keys;
+    Core::Crypto::KeyManager& keys = Core::Crypto::KeyManager::instance();
 
     VirtualFile romfs;
     VirtualDir exefs;