[PATCH] Tiny rio bugfix

[mike@eff0ff.net]

Hi

Some-time lurker, first-time poster here.

I was running a second instance of rio inside a rio window and
suddenly weird things started happening. The second instance started
imposing arbitrary limits on the size of its windows and refused to
resize some of its windows when its own window was resized.
Turns out this happens if rio's screen is 3 times as high as wide
because of a tiny mistake in its goodrect function.

Did nobody ever notice this or did it not get fixed because someone
thought it was funny to have a BIG*Dx where it doesn't belong?

diff -c /sys/src/cmd/rio/wctl.c rio/wctl.c
/sys/src/cmd/rio/wctl.c:93,99 - rio/wctl.c:93,99
  	/* reasonable sizes only please */
  	if(Dx(r) > BIG*Dx(screen->r))
  		return 0;
- 	if(Dy(r) > BIG*Dx(screen->r))
+ 	if(Dy(r) > BIG*Dy(screen->r))
  		return 0;
  	if(Dx(r) < 100 || Dy(r) < 3*font->height)
  		return 0;