10130 smatch fixes for usr/src/cmd/fm

*** 21,30 ****
--- 21,34 ----
  
  /*
   * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
   */
  
+ /*
+  * Copyright (c) 2018, Joyent, Inc.
+  */
+ 
  #include <sys/fm/protocol.h>
  #include <fm/fmd_snmp.h>
  #include <fm/fmd_msg.h>
  #include <fm/libfmevent.h>
  #include <net-snmp/net-snmp-config.h>
*** 575,585 ****
                          case 'R':
                                  nhdl->nh_rootdir = strdup(optarg);
                                  break;
                          default:
                                  free(nhdl);
!                                 return (usage(nhdl->nh_pname));
                          }
                  }
          }
  
          /*
--- 579,589 ----
                          case 'R':
                                  nhdl->nh_rootdir = strdup(optarg);
                                  break;
                          default:
                                  free(nhdl);
!                                 return (usage(argv[0]));
                          }
                  }
          }
  
          /*