Crash using --variable=varname when varname does not exist

[Tollef Fog Heen]

* Sylvain Joyeux 

| > Which architecture is this?
| ppc32
| 
| The problem is in pkg.c +1244, you do
| 	str->str[str->len - 1] = '\0';
| 
| which, obviously, is off-buffer if str->len == 0

This was fixed in my local arch archive a few days ago, I should get
around to making a release with it soonish.

-- 
Tollef Fog Heen                                                        ,''`.
UNIX is user friendly, it's just picky about who its friends are      : :' :
                                                                      `. `' 
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