XrdTpc: Fixup some minor memory bugs #1423
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This fixes an incorrect copy (which should have been a reference, resulting in a leak) and a use-after-free found by valgrind.
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This fixes an incorrect copy (which should have been a reference, resulting in a leak) and a use-after-free found by valgrind. Those are in the multistream code and, I believe, currently rarely used.
It also fixes a potential pointer deref - if libcurl failed to malloc a new handle, then we used the handle before checking for a null pointer. I also consider this fairly unlikely to occur in reality but a worthwhile fix.