10080 smatch Makefile changes for usr/src/cmd

*** 21,30 ****
--- 21,31 ----
  
  #
  # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  include $(SRC)/cmd/Makefile.cmd
  
  .KEEP_STATE:
  
*** 64,73 ****
--- 65,77 ----
  CERRWARN +=     -_gcc=-Wno-unused-variable
  CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
  CERRWARN +=     -_gcc=-Wno-unused-function
  CERRWARN +=     -_gcc=-Wno-unused-variable
  
+ # not linted
+ SMATCH=off
+ 
  all: $(EXES)
  
  clean lint:
  
  clobber: FRC