Also log port for failed connect

[michaelortmann]

Found by: https://github.com/michaelortmann/
Patch by: https://github.com/michaelortmann/
Fixes:

One-line summary:
Also log port for failed connect

Additional description (if needed):
Useful to relate log messages to each other and make it very clear what exactly failed

Test cases demonstrating functionality (if applicable):
Before:

[17:29:12] Trying server 127.0.0.1:6667
[...]
[17:29:12] Failed connect to 127.0.0.1 (Connection refused)

After:

[22:35:43] Trying server 127.0.0.1:6667
[...]
[22:35:43] Failed connect to 127.0.0.1:6667 (Connection refused)

.jump ::6 +7
[22:41:25] #-HQ# jump ::6 +7 
Jumping servers......
[22:41:26] Trying server [::6]:+7
[22:41:26] Failed connect to [::6]:+7 (Network is unreachable)