#2448 typo修正・ソース整形・ソースコメントの改善 for 2.13.3

    https://scrutinizer-ci.com/g/nobuhiko/EC-CUBE/inspections/e0f27994-b3c7-4fc6-ad70-55d3cd63769b/patches

git-svn-id: https://svn.ec-cube.net/open/branches/version-2_13-dev@23606 1e3b908f-19a9-db11-a64c-001125224ba8