Minor m68k PIC cleanup

[Jeffrey A Law]

  In message < 19990708123555.A6123@cygnus.com >you write:
  > On Thu, Jul 08, 1999 at 01:21:23PM -0600, Jeffrey A Law wrote:
  > > Any particular reason you did not update num_save_regs here?
  > 
  > I'm blind.  I saw the nregs in the epilogue code, but not
  > that one in the prologue code.
OK.  I'll update it before installing.
jeff