UTILS: fix names array memory leak #1073
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we see memory leaks from CI tests in #1023
This PR fixes these memory leaks. One instance of leaks can happen when a function such
ucc_cl_basic_get_lib_attr()gets called multiple times, which can potentially lead to callingucc_config_names_array_dupon the same cl_lib object. Each time thisduplicatefunction is called, we were allocating new memory for names array, without making sure that that array has already been allocated or not.