Doug Gregor 5ac8d769fd [Property wrappers] Allow default initialization to infer a type. ...

Property wrappers are allowed to infer the type of a variable, but this
only worked when the property wrapper was provided with an explicit
initialization, e.g.,

    @WrapsAnInt() var x   // infers type Int from WrapsAnInt.wrappedValue

However, when default initialization is supported by the property wrapper,
dropping the parentheses would produce an error about the missing type
annotation

    @WrapsAnInt var x

Make this second case behave like the first, so that default initialization
works consistently with the explicitly-specified version.
Fixes rdar://problem/59471019.

2020-03-26 13:44:08 -07:00

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