10080 smatch Makefile changes for usr/src/cmd

*** 20,29 ****
--- 20,30 ----
  #
  #
  # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  PROG=   zonecfg
  OBJS=   zonecfg.o zonecfg_lex.o zonecfg_grammar.tab.o
  
  include ../Makefile.cmd
*** 44,53 ****
--- 45,56 ----
  CERRWARN +=     -_gcc=-Wno-uninitialized
  CERRWARN +=     -_gcc=-Wno-unused-label
  CERRWARN +=     -_gcc=-Wno-unused-variable
  CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
  
+ SMOFF += all_func_returns
+ 
  CLOBBERFILES += $(PROG).ln
  
  .KEEP_STATE:
  
  all: $(PROG)