#20 segfault with malformed URLs

[Stefan Ulrich]

Klicking on an URL without an `access scheme' (the
leading `file:', `http:' part) causes xdvi to exit
with a segmentation fault. Here's a miminal example
document to reproduce the problem:

\documentclass{minimal}
\usepackage{hyperref}
\begin{document}
\url{test:me}
\end{document}

This happens with all versions >= 22.37, which probably
means that some re-initialization of the .dvi file is
not done correctly when open_www_file is failing (in
earlier versions, xdvi just exited in such a
situation).

[Stefan Ulrich]

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user_id=177175

This was actually a bug in libwww, which closes a file
descriptor twice when called with an invalid URL (reported
to the libwww mailing list, see
http://lists.w3.org/Archives/Public/www-lib/2001AprJun/0152.html\).

Patch to HTAccess.c, rev1.2, now contains a workaround for
this.