10079 smatch Makefile changes for usr/src/lib

*** 20,30 ****
  #
  #
  # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! # Copyright (c) 2012, Joyent, Inc.  All rights reserved.
  #
  
  #
  # The build process for libumem is sightly different from that used by other
  # libraries, because libumem must be built in two flavors - as a standalone
--- 20,30 ----
  #
  #
  # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! # Copyright (c) 2018, Joyent, Inc.
  #
  
  #
  # The build process for libumem is sightly different from that used by other
  # libraries, because libumem must be built in two flavors - as a standalone
*** 128,137 ****
--- 128,139 ----
  ASFLAGS += -P $(ASFLAGS_$(CURTYPE)) -D_ASM
  
  CERRWARN += -_gcc=-Wno-switch
  CERRWARN += -_gcc=-Wno-uninitialized
  
+ SMOFF += deref_check
+ 
  $(LINTLIB) := SRCS = ../common/$(LINTSRC)
  
  # We want the thread-specific errno in the library, but we don't want it in
  # the standalone.  $(DTS_ERRNO) is designed to add -D_TS_ERRNO to $(CPPFLAGS),
  # in order to enable this feature.  Conveniently, -D_REENTRANT does the same