swift234

Extend the optional-injection-of-erroneous-nil hack for more entities.

r21096 introduces an optimization barrier for failing initializers
that allows the pattern

  let x: NSFoo? = NSFoo()

be used to detect whether NSFoo() returned nil, even though the type
system says it cannot. Extend this check to Objective-C methods and
properties, where the non-optional annotation may be incorrect
<rdar://problem/17984530>.




Swift SVN r21176