Apply various clang-tidy checks for smartprs and modern C++ types

code/AssetLib/MD2/MD2Loader.cpp

@@ -205,7 +205,7 @@ void MD2Importer::InternReadFile( const std::string& pFile,
     std::unique_ptr<IOStream> file( pIOHandler->Open( pFile));
 
     // Check whether we can read from the file
-    if (file.get() == nullptr) {
+    if (file == nullptr) {
         throw DeadlyImportError("Failed to open MD2 file ", pFile, "");
     }