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Changes between Initial Version and Version 1 of Ticket #1991

initial	v1
2	2	I would like to simplify 'new_callback' op. first please see https://github.com/parrot/parrot/blob/master/t/pmc/nci.t#L1545-#L1606-1551.
3	3	there are lines:
	4
	5	{{{
4	6	.local pmc user_data
5	7	user_data = new ['Integer']
…	…
21	23	nci_cb_C1( cb_wrapped, user_data )
22	24
	25	}}}
	26
23	27
24	28	passing the value of user_data into new_callback is useless and unused, because it's finally invoked and used by this code.
25	29	nci_cb_C1( cb_wrapped, user_data ). So consider:
	30
	31	{{{
26	32	.local pmc user_data
27	33	user_data = new ['Integer']
…	…
44	50	nci_cb_C1( cb_wrapped, user_data )
45	51
46		so passing user_data = 42 to new_callback is redundant, I would simplify to this one:
	52	}}}
	53
	54	so passing user_data = 42 to new_callback is redundant, I would simplify it to this one:
	55
	56	{{{
47	57	cb_wrapped = new_callback cb, "vtU"
	58	}}}
	59