Nicholas Nethercote 7f098bdb9c Bug 1409227 (part 4) - Replace nsMemory::Clone(id, sizeof(nsID)) with nsID::Clone(id). r=mccr8.
This change requires introducing nsID::Clone(). Because it's infallible, the
patch also removes some redundant failure-handling code. (nsMemory::Clone() is
also infallible, so this code was redundant even before this change.)

--HG--
extra : rebase_source : ef22757d3fa814320490bf7e19e822b8f0c4bdc3
2017-10-18 10:39:20 +11:00
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