10080 smatch Makefile changes for usr/src/cmd

@@ -10,10 +10,11 @@
 #
 
 #
 # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 # Copyright 2014 Alexander Pyhalov
+# Copyright (c) 2018, Joyent, Inc.
 #
 
 
 LIBPROG=        mailwrapper 
 

@@ -47,10 +48,12 @@
 
 CPPFLAGS =      -I. $(CPPFLAGS.master)
 
 LINTFLAGS       += -erroff=E_FUNC_RET_ALWAYS_IGNOR2
 
+SMOFF += all_func_returns
+
 # conditional assignments
 #
 all:=           TARGET= all
 install:=       TARGET= install
 clean:=         TARGET= clean