10138 smatch fixes for usr/src/cmd/sgs

*** 26,35 ****
--- 26,39 ----
  /*
   *      Copyright (c) 1988 AT&T
   *        All Rights Reserved
   */
  
+ /*
+  * Copyright (c) 2018, Joyent, Inc.
+  */
+ 
  #include <ar.h>
  #include <stdlib.h>
  #include <memory.h>
  #include <errno.h>
  #include <libelf.h>
*** 154,163 ****
--- 158,168 ----
          }
          if ((elf->ed_memlist == 0) || (ol->m_free == ol->m_end)) {
                  if ((l = (Memlist *)malloc(sizeof (Memlist) +
                      (sizeof (Memident) * MEMIDENTNO))) == 0) {
                          _elf_seterr(EMEM_ARMEM, errno);
+                         free(m);
                          return (0);
                  }
                  l->m_next = 0;
                  l->m_free = (Memident *)(l + 1);
                  l->m_end = (Memident *)((uintptr_t)l->m_free +