Fix BU datastructures with povray!
Fix BU datastructures with povray!

The problem was that we were merging a field of a node with a value that was
deleted.  Thanks to bugpoint for reducing povray to a nice small 3 function
example.  :)


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@12116 91177308-0d34-0410-b5e6-96231b3b80d8

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