10079 smatch Makefile changes for usr/src/lib

*** 20,29 ****
--- 20,30 ----
  #
  #
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  LIBRARY = libfmd_msg.a
  VERS = .1
  
  LIBSRCS = fmd_msg.c
*** 40,49 ****
--- 41,53 ----
  CPPFLAGS += -I../common -I.
  CFLAGS += $(CCVERBOSE) $(C_BIGPICFLAGS)
  CFLAGS64 += $(CCVERBOSE) $(C_BIGPICFLAGS)
  CERRWARN += -_gcc=-Wno-switch
  CERRWARN += -_gcc=-Wno-uninitialized
+ 
+ SMOFF += all_func_returns
+ 
  LDLIBS += -lnvpair -lc
  
  LINTFLAGS = -msux
  LINTFLAGS64 = -msux -m64