[Bug-wget] cmd_string_uppercase

[Ángel González]

I noticed a gcc warning on cmd_string_uppercase() and ended up almost 
rewriting it, since I disliked the extra copy by cmd_string.

Also note that the if (!ret || q == NULL) was useless, since cmd_string 
always returns true, and q would never be NULL (it would have crashed 
inside xstrdup, see gnulib/lib/xmalloc.c).

Regards

cmd_string_uppercase.patch
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