10685 SMB code needs smatch fixes

*** 22,31 ****
--- 22,33 ----
  # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  # Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
  #
+ # Copyright 2019, Joyent, Inc.
+ #
  
  LIBRARY =       libfknsmb.a
  VERS =          .1
  
  OBJS_LOCAL = \
*** 88,97 ****
--- 90,102 ----
  # Always want DEBUG here
  CPPFLAGS += -DDEBUG
  
  CERRWARN += -_gcc=-Wno-switch
  
+ # needs work
+ SMOFF += all_func_returns,deref_check,signed
+ 
  LDLIBS +=       $(MACH_LDLIBS)
  LDLIBS +=       -lfakekernel -lpkcs11 -lnsl -lc
  
  NSMB_DIR=$(SRC)/uts/common/fs/smbclnt/netsmb
  SRCS=   $(OBJS_LOCAL:%.o=$(SRCDIR)/%.c) \