Don't draw client console buffer past top of screen

Thanks @Pan7.

code/client/cl_console.c

@@ -677,7 +677,7 @@ void Con_DrawSolidConsole( float frac ) {
 
 	// draw the text
 	con.vislines = lines;
-	rows = (lines-SMALLCHAR_WIDTH)/SMALLCHAR_WIDTH;		// rows of text to draw
+	rows = (lines-SMALLCHAR_HEIGHT*2)/SMALLCHAR_HEIGHT;		// rows of text to draw
 
 	y = lines - (SMALLCHAR_HEIGHT*3);