comm.c: occasional undesired newline on new prompt

[gastamper]

Requires some troubleshooting to address; the below kill message should not have two empty lines before prompt is displayed:

6666/6666hp > 
A Team ALPHA Marine(ALPHA) ripped apart an Elite Button Clan Scout(MOB). CARNAGE!


6666/6666hp > 

Related to commit from #59

[gastamper]

Additionally:

6666/6666hp > 
who
Worth: 0 - Scores: (ALPHA): 0   (BRAVO): 0   

KILLS---DEATHS--TEAM-----RANK-----NAME----
250     6       ADMIN    NOVICE   Admin is FRESH MEAT 

Players found: 1


6666/6666hp > 
who
Worth: 0 - Scores: (ALPHA): 0   (BRAVO): 0   

KILLS---DEATHS--TEAM-----RANK-----NAME----
250     6       ADMIN    NOVICE   Admin is FRESH MEAT 

Players found: 1

6666/6666hp > 

[gastamper]

Countdown has some issues as well, but looks like it might be partially just extra newlines in the incoming strings:

6666/6666hp > 
Oh no! enforcer has depressed the button!
300 seconds until core meltdown!


6666/6666hp > 
240 seconds until core meltdown!


6666/6666hp > 
180 seconds until core meltdown!



6666/6666hp > 
150 seconds until core meltdown!


6666/6666hp > 
120 seconds until core meltdown!



6666/6666hp > 
90 seconds until core meltdown!


6666/6666hp > ```

[gastamper]

Prompt displays after Game Over screen as well.

[gastamper]

This is probably caused by change 471752e which added prompt rewriting .