[Fontconfig] Patch: avoid crashes is config files contain junk

[Mike FABIAN]

If ~/.fonts.conf contains:

  <edit mode="assign_replace" name="spacing">
   <int>mono</int>
  </edit>


fontconfig crashes:

    mfabian at magellan:~$ fc-match sans
    Fontconfig error: "~/.fonts.conf", line 46: "mono": not a valid integer
    セグメンテーション違反です (core dumped)
    mfabian at magellan:~$

Of course the above is nonsense, “mono” is no valid integer indeed.

But I think nevertheless fontconfig should not crash in that case.

A patch is attached. 

-- 
Mike FABIAN   <mfabian at suse.de>   http://www.suse.de/~mfabian
睡眠不足はいい仕事の敵だ。
I � Unicode

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