os: refactor/rewrite entire namespace.

stratosphere/loader/source/ldr_patcher.cpp

@@ -29,7 +29,7 @@ namespace ams::ldr {
         constexpr const char * const LoaderSdMountName = "#amsldr-sdpatch";
         static_assert(sizeof(LoaderSdMountName) <= fs::MountNameLengthMax);
 
-        os::Mutex g_ldr_sd_lock;
+        os::Mutex g_ldr_sd_lock(false);
         bool g_mounted_sd;
 
         bool EnsureSdCardMounted() {