10080 smatch Makefile changes for usr/src/cmd

*** 20,36 ****
--- 20,40 ----
  # CDDL HEADER END
  #
  #
  # Copyright (c) 1990 by Sun Microsystems, Inc.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  PROG= grpck
  
  include ../Makefile.cmd
  
  CERRWARN += -_gcc=-Wno-unused-variable
  
+ # not linted
+ SMATCH=off
+ 
  RELUSRSBIN=     ../usr/sbin
  ROOTSYMLINK=    $(ROOTETC)/$(PROG)
  
  .KEEP_STATE: