10080 smatch Makefile changes for usr/src/cmd

*** 20,29 ****
--- 20,30 ----
  
  
  #
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
+ # Copyright (c) 2018, Joyent, Inc.
  #
  
  PROG=   snoop
  OBJS=   nfs4_xdr.o snoop.o snoop_aarp.o snoop_adsp.o snoop_aecho.o \
          snoop_apple.o snoop_arp.o snoop_atp.o snoop_bparam.o \
*** 58,67 ****
--- 59,71 ----
  CERRWARN += -_gcc=-Wno-parentheses
  CERRWARN += -_gcc=-Wno-unused-variable
  CERRWARN += -_gcc=-Wno-unused-label
  CERRWARN += -_gcc=-Wno-unused-function
  
+ # we really should have smatch running on this code but...
+ SMATCH=off
+ 
  .KEEP_STATE:
  
  .PARALLEL: $(OBJS)
  
  all:    $(PROG)