altos/lisp: Move stack recursion check after null check
authorKeith Packard <keithp@keithp.com>
Sat, 19 Nov 2016 07:37:44 +0000 (23:37 -0800)
committerKeith Packard <keithp@keithp.com>
Mon, 20 Feb 2017 19:16:52 +0000 (11:16 -0800)
Don't crash when printing null stack this way.

Signed-off-by: Keith Packard <keithp@keithp.com>

No differences found