Fix a memory out-of-bound visit bug.

So len could equal = max_len, and at this point name[len] is out of the range.

BUG=
TEST=
Review URL: https://codereview.appspot.com/7223045

git-svn-id: http://angleproject.googlecode.com/svn/trunk@1803 736b8ea6-26fd-11df-bfd4-992fa37f6226
Fix version.
Review URL: https://codereview.appspot.com/7221045

git-svn-id: http://angleproject.googlecode.com/svn/trunk@1804 736b8ea6-26fd-11df-bfd4-992fa37f6226