8516 Suppress gcc errors with -Wno- in Makefile for usr/src/cmd

*** 17,26 ****
--- 17,27 ----
  # information: Portions Copyright [yyyy] [name of copyright owner]
  #
  # CDDL HEADER END
  #
  #
+ # Copyright 2017 Gary Mills
  # Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  # cmd/sgs/prof/Makefile.com
  #
*** 46,52 ****
--- 47,56 ----
  LDLIBS +=       $(CONVLIBDIR) $(CONV_LIB) $(ELFLIBDIR) -lelf
  LINTSRCS =      $(SRCS)
  LINTFLAGS +=    -x
  CLEANFILES +=   $(LINTOUTS)
  
+ # Suppress the error for: s_inv
+ prof.o := CERRWARN += -_gcc=-Wno-unused-but-set-variable
+ 
  %.o:            ../common/%.c
                  $(COMPILE.c) $<