Minor fix to output_operand_lossage

[Richard Kenner]

It wasn't actually generating an ICE either.

I applied this to both the branch and the mainline.

Sun Feb 18 15:45:17 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

	* final.c (output_operand_lossage): Use internal_error, not error.

*** final.c	2001/02/08 15:09:05	1.158
--- final.c	2001/02/18 20:36:48
*************** output_operand_lossage (msgid)
*** 3391,3398 ****
      error_for_asm (this_is_asm_operands, "invalid `asm': %s", _(msgid));
    else
!     {
!       error ("output_operand: %s", _(msgid));
!       abort ();
!     }
  }
  
--- 3391,3395 ----
      error_for_asm (this_is_asm_operands, "invalid `asm': %s", _(msgid));
    else
!     internal_error ("output_operand: %s", _(msgid));
  }