[Bug-wget] [PATCH] Replaced-xfree_null-by-xfree-and-nullify-argument-aftfer-freeing

[Tim Rühsen]

This patch removes xfree_null() and replaces it by xfree().
xfree() automatically nullifies the argument after freeing to reduce dangling
pointer problems like double frees.

I also cleaned up code like
        if (p)
          xfree (p);

and
        xfree(p);
        p = NULL;

Both cases reduce to a call to xfree(p).

check and distcheck tested, also valgrind tested.

Please review and comment.

Tim

0001-Replaced-xfree_null-by-xfree-and-nullify-argument-af.patch
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