XXXX-nvlist_free-NULL-is-a-no-op Udiff usr/src/uts/common/os/sunndi.c

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patch tsoome-feedback

@@ -418,11 +418,10 @@
                 kmem_free(dcp->c_nodename, MAXNAMELEN);
 
         if (dcp->c_unitaddr != NULL)
                 kmem_free(dcp->c_unitaddr, MAXNAMELEN);
 
-        if (dcp->nvl_user != NULL)
                 nvlist_free(dcp->nvl_user);
 
         kmem_free(dcp, sizeof (*dcp));
 }