[Chicken-users] Patch for open-input-file segfault

[Reed Sheridan]

Hello,

I found that this expression: 

(open-input-file "") 

causes a segmentation fault.  It turns out that ##sys#expand-home-path
returns undefined when given "", which is then passed to some C
function that expects a string.  The fix for this is simple enough,
and is attached as a patch.

Reed Sheridan

library.scm.patch
Description: Text Data