[webauthn] add invocation of authenticatorCancel to step 8 of makeCredential ?

equalsJeffH has just created a new issue for 
https://github.com/w3c/webauthn:

== add invocation of authenticatorCancel to step 8 of makeCredential ?
 ==
extracted from: 
https://lists.w3.org/Archives/Public/public-webauthn/2016Jun/0070.html
<blockquote>
Assuming that a system has recognized three available authenticators, 
when a makeCredential() request is called all three authenticators 
will display a message asking a user to approve making a credential.  
[...]  what happens when the first authenticator succeeds? If a user 
selects ok / yes / approve, do the other two authenticators still 
display their confirmation messages and allow additional registration 
responses? Or should the client send authenticationCancel() to the two
 other authenticators after the first successful result?
</blockquote>
To a fair degree this is all up to "the platform" (OS+UA+authnrs), I
think, although invoking authenticatorCancel on any remaining
issuedRequests entries /could/ be added to the last bullet item of 
step 9
in..

https://w3c.github.io/webauthn/#makeCredential

..as you suggest, but others should probably weigh-in.




Please view or discuss this issue at 
https://github.com/w3c/webauthn/issues/124 using your GitHub account