ape_reader: Properly fix the build under GCC 7. Since we cannot '#define wchar_t char' anymore, we need to properly fix the source code to work with char instead.
change to lower case git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30114 a95241bf-73f2-0310-859d-f6bbb57e9c96