smatch: check libld_* allocation functions

*** 288,297 ****
--- 288,300 ----
                  return;
          }
  
          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));
+ 
          if (option_spammy)
                  add_hook(&match_symbol, SYM_HOOK);
          add_hook(&match_dereferences, DEREF_HOOK);
          add_hook(&match_call, FUNCTION_CALL_HOOK);
          add_hook(&match_return, RETURN_HOOK);