Propagate temporary lifetime extension into if and match expressions #1548
Description
Since 1.79, the temporaries are extended in the following example:
let a = if true {
..;
&temp() // used to error, but now gets lifetime extended
} else {
..;
&temp() // used to error, but now gets lifetime extended
};The list in extending-based-on-expressions seems to be out-of-date.