11227 smb code needs smatch fixes

*** 20,29 ****
--- 20,33 ----
   */
  /*
   * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
   */
  
+ /*
+  * Copyright 2019 Joyent, Inc.
+  */
+ 
  #include <sys/types.h>
  #include <sys/sunddi.h>
  #include <sys/kmem.h>
  #include <sys/sysmacros.h>
  #include <smbsrv/smb_kproto.h>
*** 293,303 ****
          if (size == 0) {
                  smb_free(sr, ptr, zero);
                  return (NULL);
          }
          if (smh->smh_size >= size) {
!                 if ((zero) & (smh->smh_size > size))
                          bzero((caddr_t)ptr + size, smh->smh_size - size);
                  return (ptr);
          }
          new_ptr = smb_alloc(sr, size, B_FALSE);
          bcopy(ptr, new_ptr, smh->smh_size);
--- 297,307 ----
          if (size == 0) {
                  smb_free(sr, ptr, zero);
                  return (NULL);
          }
          if (smh->smh_size >= size) {
!                 if ((zero) && (smh->smh_size > size))
                          bzero((caddr_t)ptr + size, smh->smh_size - size);
                  return (ptr);
          }
          new_ptr = smb_alloc(sr, size, B_FALSE);
          bcopy(ptr, new_ptr, smh->smh_size);