Merge branch 'tb/connect-ipv6-parse-fix'

An earlier update to the parser that disects an address broke an
address, followed by a colon, followed by an empty string (instead
of the port number).

* tb/connect-ipv6-parse-fix:
connect.c: ignore extra colon after hostname

diff --cc connect.c
Simple merge

diff --cc t/t5500-fetch-pack.sh
Simple merge