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6a6def775d
The URI parsing code for "host[:port]" checks that the final character is not ']' in order to allow for IPv6 literals. If the entire "host[:port]" portion of the URL is an empty string, then this will access the preceding character. This does not result in accessing invalid memory (since the string is guaranteed by construction to always have a preceding character) and does not result in incorrect behaviour (since if the string is empty then strrchr() is guaranteed to return NULL), but it does make the code confusing to read. Fix by inverting the order of the two tests. Signed-off-by: Michael Brown <mcb30@ipxe.org>
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