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/registered_cache.h b/src/core/file_sys/registered_cache.h
index d1eec240e..4b2fb08cb 100644
--- a/src/core/file_sys/registered_cache.h
+++ b/src/core/file_sys/registered_cache.h
@@ -88,7 +88,7 @@ public:
 
 protected:
     // A single instance of KeyManager to be used by GetEntry()
-    Core::Crypto::KeyManager keys;
+    Core::Crypto::KeyManager& keys = Core::Crypto::KeyManager::instance();
 };
 
 class PlaceholderCache {