10117 libbe needs smatch fixes

*** 23,32 ****
--- 23,33 ----
   * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
   * Copyright 2016 Toomas Soome <tsoome@me.com>
   * Copyright (c) 2015 by Delphix. All rights reserved.
   * Copyright 2018 OmniOS Community Edition (OmniOSce) Association.
+  * Copyright (c) 2018, Joyent, Inc.
   */
  
  
  /*
   * System includes
*** 268,278 ****
                  else
                          (void) asprintf(fbarg, "/ %s %s "
                              "-B zfs-bootfs=%s,bootpath=\"%s\"\n", kernel,
                              kernel_options, node->be_root_ds, tmp);
  
!                 if (fbarg == NULL)
                          ret = BE_ERR_NOMEM;
                  else
                          ret = 0;
          } else
                  ret = BE_ERR_NOMEM;
--- 269,279 ----
                  else
                          (void) asprintf(fbarg, "/ %s %s "
                              "-B zfs-bootfs=%s,bootpath=\"%s\"\n", kernel,
                              kernel_options, node->be_root_ds, tmp);
  
!                 if (*fbarg == NULL)
                          ret = BE_ERR_NOMEM;
                  else
                          ret = 0;
          } else
                  ret = BE_ERR_NOMEM;
*** 3906,3918 ****
                  return (BE_ERR_BAD_MENU_PATH);
          }
          if (mkdirp(menu_path,
              S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) == -1 &&
              errno != EEXIST) {
-                 free(menu_path);
                  be_print_err(gettext("be_create_menu: Failed to create the %s "
                      "directory: %s\n"), menu_path, strerror(errno));
                  return (errno_to_be_err(errno));
          }
          free(menu_path);
  
          /*
--- 3907,3919 ----
                  return (BE_ERR_BAD_MENU_PATH);
          }
          if (mkdirp(menu_path,
              S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) == -1 &&
              errno != EEXIST) {
                  be_print_err(gettext("be_create_menu: Failed to create the %s "
                      "directory: %s\n"), menu_path, strerror(errno));
+                 free(menu_path);
                  return (errno_to_be_err(errno));
          }
          free(menu_path);
  
          /*