TRAC #12110
Unlike built-in types, structs can be redefined (in a different scope).
Signed-off-by: Shannon Woods
Signed-off-by: Daniel Koch

Author:    Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@309 736b8ea6-26fd-11df-bfd4-992fa37f6226