10136 smatch fix for policykit

*** 19,28 ****
--- 19,31 ----
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
   *
   **************************************************************************/
  
+ /*
+  * Copyright (c) 2018, Joyent, Inc.
+  */
  
  #ifdef HAVE_CONFIG_H
  #  include <config.h>
  #endif
  
*** 197,206 ****
                  printf ("is_allowed %d\n", is_allowed);
          }
  
  out:
          if (ctx != NULL)
!                 libpolkit_free_context (ctx);
  
          return rc;
  }
  
--- 200,209 ----
                  printf ("is_allowed %d\n", is_allowed);
          }
  
  out:
          if (ctx != NULL)
!                 (void) libpolkit_free_context (ctx);
  
          return rc;
  }