10080 smatch Makefile changes for usr/src/cmd

@@ -17,11 +17,11 @@
 # information: Portions Copyright [yyyy] [name of copyright owner]
 #
 # CDDL HEADER END
 #
 # Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved.
-# Copyright 2017, Joyent, Inc. All rights reserved.
+# Copyright 2018, Joyent, Inc. All rights reserved.
 #
 # cmd/fs.d/nfs/mount/Makefile
 
 FSTYPE=         nfs
 LIBPROG=        mount

@@ -48,10 +48,13 @@
 CERRWARN += -_gcc=-Wno-unused-variable
 CERRWARN += -_gcc=-Wno-uninitialized
 CERRWARN += -_gcc=-Wno-address
 CERRWARN += -_gcc=-Wno-unused-function
 
+# unknown type for func
+SMATCH=off
+
 #
 # Message catalog
 #
 POFILE= mount.po