10080 smatch Makefile changes for usr/src/cmd

@@ -21,10 +21,11 @@
 #
 #
 # Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
+# Copyright (c) 2018, Joyent, Inc.
 
 FSTYPE=         ufs
 LIBPROG=        df
 ATTMK=          $(LIBPROG)
 

@@ -38,10 +39,13 @@
 CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
 CERRWARN +=     -_gcc=-Wno-parentheses
 CERRWARN +=     -_gcc=-Wno-unused-label
 CERRWARN +=     -_gcc=-Wno-unused-function
 
+# not linted
+SMATCH=off
+
 # for messaging catalogue file
 #
 POFILE= df.po
 XGETFLAGS += -a -x df.xcl