[perl #75136] return value of multi declaration should be just one candidate.

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# New Ticket Created by  Lewis Wall 
# Please include the string:  [perl #75136]
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# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=75136 >


When I run:

multi x (Int $x) {...}
(multi x (Str $x) {...})>>.candidates>>.say

It outputs:
x
x

(note there are two x's).  The declaration of the second multi is returning
the multisub with both candidates, rather than just the sub in the ()s.
According to TimToady, the latter is the correct behavior, and not the
former.