Revert commit 9a41659 (PR 5005) for breaking the loading of certain PDF files in the Firefox addon when range requests are active #5145
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After 9a41659 (i.e. the first commit of PR #5005), the first page of http://purasilkthailand.com/static/doc/thai-tc.pdf no longer renders. This is only reproducible in the addon when range requests are active. To reproduce this, make sure that the file is loaded from the server by doing a "skip"-cache reload (e.g. Ctrl + F5).
What's somewhat unfortunate with this regression, is that not only has this already landed on Mozilla Central (see bug 1042307); but it has also been uplifted to the Aurora channel.
/cc @fkaelberer