jDramaix/closure-stylesheet-gss — pull request #1 by jDramaix (2014-04-07 16:14:44+00:00)
Title: Copy the sourceCodeLocation when we do a deep copy of the CssRulesetNode

When we do a deep copy of the CssTree, the source code location of the CssRulesetNode are not copied.
The side effect is that when a error is reported via a GssError, we receive a NullPointerException instead
of the error message.