Andrew Burgess
8a0b60471a
Convert the gdbpy_err_fetch class to make use of gdbpy_ref, this removes the need for manual reference count management, and allows the destructor to be removed. There should be no functional change after this commit. I think this cleanup is worth doing on its own, however, in a later commit I will want to copy instances of gdbpy_err_fetch, and switching to using gdbpy_ref means that I can rely on the default copy constructor, without having to add one that handles the reference counts, so this is good preparation for that upcoming change.
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