address three bugs in forwarded header parsing #375
Merged
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Previously,
forsection to be first (Error in parser for the "Forwarded" header #374)starts_with_ignore_casewould panic (only used in forwarded currently)pub(crate)) token did not successfully parse 1-character tokens due to an off-by-one errorThis can be fairly easily backported to the 2.x line if there's interest
closes #374