10075 make usr/src/tools smatch clean

@@ -10,10 +10,11 @@
 #
 
 #
 # Copyright 2017 Toomas Soome <tsoome@me.com>
 #
+# Copyright (c) 2018, Joyent, Inc.
 
 PROG=   vtfontcvt
 OBJS=   vtfontcvt.o
 
 LZ4COMMONDIR= $(SRC)/common/ficl/softcore

@@ -20,10 +21,13 @@
 LZ4_OBJS=       lz4.o
 OBJS    +=      $(LZ4_OBJS)
 
 LDLIBS += -lumem
 
+# not linted
+SMATCH=off
+
 %.o:    $(LZ4COMMONDIR)/%.c
         $(COMPILE.c) $<
         $(POST_PROCESS_O)
 
 CSTD =  $(CSTD_GNU99)