Fix the console splitting up halfway through startup.

Figured it out when the default SRB2 config didn't split the console in half.
I ended up combing the whole config for the offending cvar, and it was con_textsize!
Turns out it sets con_recalc even during startup, which causes the console splitting..

For those who don't know what I'm on about, put con_textsize small into the console, and restart SRB2 to reproduce, or view the video at the issue linked below.

Fixes #349 (closed).