Trailing space in CAP ACK

[progval]

Session log, with pipes added at the end of lines so you can see the issue:

1450898955.283 1: connects to server.
1450898955.283 1 -> S: CAP LS 302|
1450898955.283 S -> 1: :My.Little.Server NOTICE * :*** Looking up your hostname...|
1450898955.283 S -> 1: :My.Little.Server NOTICE * :*** Checking Ident|
1450898955.283 S -> 1: :My.Little.Server NOTICE * :*** No Ident response|
1450898955.283 S -> 1: :My.Little.Server NOTICE * :*** Found your hostname|
1450898955.283 S -> 1: :My.Little.Server CAP * LS :account-notify away-notify cap-notify chghost extended-join multi-prefix tls userhost-in-names|
1450898955.283 1 -> S: CAP REQ :foo multi-prefix bar|
1450898955.324 S -> 1: :My.Little.Server CAP * NAK :foo multi-prefix bar|
1450898955.324 1 -> S: CAP REQ :multi-prefix bar|
1450898955.363 S -> 1: :My.Little.Server CAP * NAK :multi-prefix bar|
1450898955.364 1 -> S: CAP REQ :foo multi-prefix|
1450898955.403 S -> 1: :My.Little.Server CAP * NAK :foo multi-prefix|
1450898955.404 1 -> S: CAP REQ :multi-prefix|
1450898955.443 S -> 1: :My.Little.Server CAP * ACK :multi-prefix |

Mammon has a similar issue, but it is a temporary hack to support mIRC. But in Mammon it affects NAK too and not in Charybdis, so I guess this is not the case in Charybdis.

[kaniini]

This is due to an optimization in clicap_generate(). As it is solely a cosmetic issue, we are not likely to change it, but a patch would be accepted if submitted.