FINALLY FIXED THE DAMN POPPING/UART BUG :D

I moved the pUart declaration so that it wasn't global (this wasn't the
issue, just a bit of cleanup)...

The issue had to do with us printing / releasing memory before we
toggled the IER_THRE bit, for some reason. I emailed Irene to see if she
knew why it'd be happening, but in the meantime, I'm just glad it's
fixed >.<