yuzu: Remove explicit types from locks where applicable

With C++17's deduction guides, the type doesn't need to be explicitly
specified within locking primitives anymore.

src/yuzu/applets/error.cpp

@@ -54,6 +54,6 @@ void QtErrorDisplay::ShowCustomErrorText(ResultCode error, std::string dialog_te
 
 void QtErrorDisplay::MainWindowFinishedError() {
     // Acquire the HLE mutex
-    std::lock_guard<std::recursive_mutex> lock(HLE::g_hle_lock);
+    std::lock_guard lock{HLE::g_hle_lock};
     callback();
 }