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Committer:
William Grant
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Date:
2009-03-25 11:07:26 UTC
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Revision ID:
grantw@unimelb.edu.au-20090325110726-o0kpof4rwbov9yby
Don't treat an empty X-IVLE-Action-Error header as an error condition.
This makes some sense, and IE8 violates the XHR spec by conveniently
returning an empty string instead of null for a non-existent header.