Fix compiling with _IRR_WCHAR_FILESYSTEM.

(sry, didn't test correctly last check-in, forgot to set UNICODE)

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5216 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CGUIFileOpenDialog.cpp

@@ -388,7 +388,7 @@ void CGUIFileOpenDialog::pathToStringW(irr::core::stringw& result, const irr::io
 	core::multibyteToWString(result, p);
 	setlocale(LC_ALL, oldLocale);
 #else
-	result = path.c_str();
+	result = p.c_str();
 #endif
 }