smatch: check libld_* allocation functions

*** 112,121 ****
--- 112,123 ----
          }
  
          add_hook(&match_function_def, FUNC_DEF_HOOK);
  
          add_function_hook("free", &match_free, INT_PTR(0));
+         if (option_project == PROJ_ILLUMOS_USER)
+                 add_function_hook("libld_free", &match_free, INT_PTR(0));
  
          select_return_implies_hook(PARAM_FREED, &set_param_freed);
          add_modification_hook(my_id, &set_ignore);
  
          all_return_states_hook(&process_states);