Patch for sendmail 8.7 to re-enable Return-Receipt-To:

This is my inofficial, unsupported patch to re-enable Return-Receipt-To: in sendmail 8.7.3. There is absolutely no guarantee for this!

*** envelope.c	Thu Dec  7 11:54:33 1995
--- envelope.c.new	Thu Dec  7 11:51:06 1995
***************
*** 263,272 ****
  	**  Send back return receipts as requested.
  	*/
  
! /*
  	if (e->e_receiptto != NULL && bitset(EF_SENDRECEIPT, e->e_flags)
  	    && !bitset(PRIV_NORECEIPTS, PrivacyFlags))
! */
  	if (e->e_receiptto == NULL)
  		e->e_receiptto = e->e_from.q_paddr;
  	if (success_return && !failure_return &&
--- 263,275 ----
  	**  Send back return receipts as requested.
  	*/
  
! 	/* re-enabled, ca, 07.12.1995	*/
  	if (e->e_receiptto != NULL && bitset(EF_SENDRECEIPT, e->e_flags)
  	    && !bitset(PRIV_NORECEIPTS, PrivacyFlags))
! 	{
! 		success_return = TRUE;
! 	}
! 
  	if (e->e_receiptto == NULL)
  		e->e_receiptto = e->e_from.q_paddr;
  	if (success_return && !failure_return &&