[RFA] dwarf2expr.c: Prepare for eventual DW_OP_piece support

[Kevin Buettner]

On May 7,  7:06pm, Elena Zannoni wrote:

>  > Okay?
> 
>  ok.
> 
>  > 	* dwarf2expr.c (execute_stack_op): Move ``ctx->in_reg'' initialization
>  > 	out of loop.  Allow DW_OP_reg0 ... DW_OP_reg31 and DW_OP_regx to
>  > 	be used in conjuction with DW_OP_piece.  Revise error message
>  > 	accordingly.

Committed.

Kevin