10105 libproject needs smatch fixes

@@ -18,11 +18,11 @@
  *
  * CDDL HEADER END
  */
 /*
  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+ * Copyright (c) 2018, Joyent, Inc.
  */
 
 
 #include <sys/task.h>
 #include <sys/types.h>

@@ -499,20 +499,20 @@
         /*
          * Bind to the pool with 'pool.default' = 'true' if
          * 'system.bind-default' = 'true'.
          */
         if ((pvals[0] = pool_value_alloc()) == NULL) {
-                pool_conf_close(conf);
+                (void) pool_conf_close(conf);
                 pool_conf_free(conf);
                 return (-1);
         }
         if (!force && pool_get_property(conf, pool_conf_to_elem(conf),
             "system.bind-default", pvals[0]) != POC_BOOL ||
             pool_value_get_bool(pvals[0], &bval) != PO_SUCCESS ||
             bval == PO_FALSE) {
                 pool_value_free(pvals[0]);
-                pool_conf_close(conf);
+                (void) pool_conf_close(conf);
                 pool_conf_free(conf);
                 errno = pool_name == NULL ? EACCES : ESRCH;
                 return (-1);
         }
         (void) pool_value_set_name(pvals[0], "pool.default");

@@ -520,11 +520,11 @@
         if ((pools = pool_query_pools(conf, &nelem, pvals)) == NULL) {
                 /*
                  * No default pools exist.
                  */
                 pool_value_free(pvals[0]);
-                pool_conf_close(conf);
+                (void) pool_conf_close(conf);
                 pool_conf_free(conf);
                 errno = pool_name == NULL ? EACCES : ESRCH;
                 return (-1);
         }
         if (nelem != 1 ||